fix: print .all-contributorsrc with two spaces (#2178)

## PR Checklist

- [x] Addresses an existing open issue: fixes #2177
- [x] That issue was marked as [`status: accepting
prs`](https://github.com/JoshuaKGoldberg/create-typescript-app/issues?q=is%3Aopen+is%3Aissue+label%3A%22status%3A+accepting+prs%22)
- [x] Steps in
[CONTRIBUTING.md](https://github.com/JoshuaKGoldberg/create-typescript-app/blob/main/.github/CONTRIBUTING.md)
were taken

## Overview

Uses `null, 2` as JSON.stringify settings - which matches
https://github.com/all-contributors/cli/blob/74bc388bd6f0ae2658e6495e9d3781d737438a97/src/util/formatting.js#L2.

🎁

Author: JoshuaKGoldberg

package.json

@@ -38,7 +38,7 @@
 	},
 	"dependencies": {
 		"@typescript-eslint/typescript-estree": "^8.29.1",
-		"bingo": "^0.5.14",
+		"bingo": "^0.5.15",
 		"bingo-fs": "^0.5.5",
 		"bingo-stratum": "^0.5.11",
 		"cached-factory": "^0.1.0",

pnpm-lock.yaml

@@ -53,7 +53,13 @@ describe("blockAllContributors", () => {
 			    },
 			  ],
 			  "files": {
-			    ".all-contributorsrc": "{"badgeTemplate":"\\t<a href=\\"#contributors\\" target=\\"_blank\\"><img alt=\\"👪 All Contributors: <%= contributors.length %>\\" src=\\"https://img.shields.io/badge/%F0%9F%91%AA_all_contributors-<%= contributors.length %>-21bb42.svg\\" /></a>","contributors":[],"contributorsSortAlphabetically":true,"projectName":"test-repository","projectOwner":"test-owner"}",
+			    ".all-contributorsrc": "{
+			  "badgeTemplate": "\\t<a href=\\"#contributors\\" target=\\"_blank\\"><img alt=\\"👪 All Contributors: <%= contributors.length %>\\" src=\\"https://img.shields.io/badge/%F0%9F%91%AA_all_contributors-<%= contributors.length %>-21bb42.svg\\" /></a>",
+			  "contributors": [],
+			  "contributorsSortAlphabetically": true,
+			  "projectName": "test-repository",
+			  "projectOwner": "test-owner"
+			}",
 			    ".github": {
 			      "workflows": {
 			        "contributors.yml": "jobs:
@@ -174,7 +180,28 @@ describe("blockAllContributors", () => {
 			    },
 			  ],
 			  "files": {
-			    ".all-contributorsrc": "{"badgeTemplate":"\\t<a href=\\"#contributors\\" target=\\"_blank\\"><img alt=\\"👪 All Contributors: <%= contributors.length %>\\" src=\\"https://img.shields.io/badge/%F0%9F%91%AA_all_contributors-<%= contributors.length %>-21bb42.svg\\" /></a>","contributors":[{"avatar_url":"https://avatars.githubusercontent.com/u/3335181?v=4","contributions":["bug","code","design","doc","test","tool"],"login":"JoshuaKGoldberg","name":"Josh Goldberg","profile":"http://www.joshuakgoldberg.com"}],"contributorsSortAlphabetically":true,"projectName":"test-repository","projectOwner":"JoshuaKGoldberg"}",
+			    ".all-contributorsrc": "{
+			  "badgeTemplate": "\\t<a href=\\"#contributors\\" target=\\"_blank\\"><img alt=\\"👪 All Contributors: <%= contributors.length %>\\" src=\\"https://img.shields.io/badge/%F0%9F%91%AA_all_contributors-<%= contributors.length %>-21bb42.svg\\" /></a>",
+			  "contributors": [
+			    {
+			      "avatar_url": "https://avatars.githubusercontent.com/u/3335181?v=4",
+			      "contributions": [
+			        "bug",
+			        "code",
+			        "design",
+			        "doc",
+			        "test",
+			        "tool"
+			      ],
+			      "login": "JoshuaKGoldberg",
+			      "name": "Josh Goldberg",
+			      "profile": "http://www.joshuakgoldberg.com"
+			    }
+			  ],
+			  "contributorsSortAlphabetically": true,
+			  "projectName": "test-repository",
+			  "projectOwner": "JoshuaKGoldberg"
+			}",
 			    ".github": {
 			      "workflows": {
 			        "contributors.yml": "jobs:
@@ -294,7 +321,28 @@ describe("blockAllContributors", () => {
 			    },
 			  ],
 			  "files": {
-			    ".all-contributorsrc": "{"badgeTemplate":"\\t<a href=\\"#contributors\\" target=\\"_blank\\"><img alt=\\"👪 All Contributors: <%= contributors.length %>\\" src=\\"https://img.shields.io/badge/%F0%9F%91%AA_all_contributors-<%= contributors.length %>-21bb42.svg\\" /></a>","contributors":[{"avatar_url":"https://avatars.githubusercontent.com/u/3335181?v=4","contributions":["bug","code","design","doc","test","tool"],"login":"other","name":"Other","profile":"http://www.example.com"}],"contributorsSortAlphabetically":true,"projectName":"test-repository","projectOwner":"test-owner"}",
+			    ".all-contributorsrc": "{
+			  "badgeTemplate": "\\t<a href=\\"#contributors\\" target=\\"_blank\\"><img alt=\\"👪 All Contributors: <%= contributors.length %>\\" src=\\"https://img.shields.io/badge/%F0%9F%91%AA_all_contributors-<%= contributors.length %>-21bb42.svg\\" /></a>",
+			  "contributors": [
+			    {
+			      "avatar_url": "https://avatars.githubusercontent.com/u/3335181?v=4",
+			      "contributions": [
+			        "bug",
+			        "code",
+			        "design",
+			        "doc",
+			        "test",
+			        "tool"
+			      ],
+			      "login": "other",
+			      "name": "Other",
+			      "profile": "http://www.example.com"
+			    }
+			  ],
+			  "contributorsSortAlphabetically": true,
+			  "projectName": "test-repository",
+			  "projectOwner": "test-owner"
+			}",
 			    ".github": {
 			      "workflows": {
 			        "contributors.yml": "jobs:

src/blocks/blockAllContributors.test.ts

@@ -65,14 +65,18 @@ export const blockAllContributors = base.createBlock({
 				}),
 			],
 			files: {
-				".all-contributorsrc": JSON.stringify({
-					badgeTemplate:
-						'	<a href="#contributors" target="_blank"><img alt="👪 All Contributors: <%= contributors.length %>" src="https://img.shields.io/badge/%F0%9F%91%AA_all_contributors-<%= contributors.length %>-21bb42.svg" /></a>',
-					contributors: options.contributors ?? [],
-					contributorsSortAlphabetically: true,
-					projectName: options.repository,
-					projectOwner: options.owner,
-				}),
+				".all-contributorsrc": JSON.stringify(
+					{
+						badgeTemplate:
+							'	<a href="#contributors" target="_blank"><img alt="👪 All Contributors: <%= contributors.length %>" src="https://img.shields.io/badge/%F0%9F%91%AA_all_contributors-<%= contributors.length %>-21bb42.svg" /></a>',
+						contributors: options.contributors ?? [],
+						contributorsSortAlphabetically: true,
+						projectName: options.repository,
+						projectOwner: options.owner,
+					},
+					null,
+					2,
+				),
 				".github": {
 					workflows: {
 						"contributors.yml": createSoloWorkflowFile({