ci: stop testing against NodeJS v14, v16 (#152)

* build(package): set minimal node version in engines field to v18
BREAKING CHANGE: Drop support for NodeJS v14, v16

* ci: stop testing against NodeJS v14, v16

* ci: stop testing against NodeJS v14, v16

* ci: stop testing against NodeJS v14, v16

* ci: stop testing against NodeJS v14, v16

* ci: stop testing against NodeJS v14, v16

* Update oauth-authorization-url.js

* Bump oauth-methods.js version

* Bump octokit package versions

---------

Co-authored-by: Keegan Campbell <[email protected]>

Author: wolfy1339

.github/workflows/test.yml

@@ -13,9 +13,8 @@ jobs:
     strategy:
       matrix:
         node_version:
-          - 14
-          - 16
           - 18
+          - 20
     steps:
       - uses: actions/checkout@v3
       - name: Use Node.js ${{ matrix.node_version }}