Update actions/checkout action to v3

Author: renovate-bot

.github/workflows/changeset.yml

@@ -10,7 +10,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           fetch-depth: 0
           persist-credentials: false

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install
         run: yarn
       - name: Lint

.github/workflows/release.yml

@@ -11,7 +11,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           # This makes Actions fetch all Git history so that Changesets can
           # generate changelogs with the correct commits.