chore: update and normalize GitHub workflows (#517)

- Use the same YAML structure everywhere
- Use actions/setup-node@v2-beta
- Add Node.js 15.x to the test matrix
- Update release-please-action to v2.5.7
- Update stale action to v3

Author: targos

.github/workflows/commitlint.yml

@@ -1,5 +1,5 @@
----
 name: Conventional Commit Linter
+
 on:
   push:
     branches:

.github/workflows/nodejs.yml

@@ -13,32 +13,32 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Use Node.js 14
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2-beta
         with:
           node-version: 14.x
-      - name: npm install and lint
-        run: |
-          npm install
-          npm run lint
+      - name: Install dependencies
+        run: npm install
+      - name: Lint
+        run: npm run lint
 
   test:
     name: Test on Node.js ${{ matrix.node-version }} and ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        node-version: [10.x, 12.x, 14.x]
+        node-version: [10.x, 12.x, 14.x, 15.x]
         # TODO(targos): fix and add windows-latest
         os: [ubuntu-latest, macOS-latest]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v2
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2-beta
         with:
           node-version: ${{ matrix.node-version }}
-      - name: npm install and test
-        run: |
-          npm install
-          npm run coverage-all
+      - name: Install dependencies
+        run: npm install
+      - name: Run tests
+        run: npm run coverage-all
       - name: Upload coverage report to Codecov
         uses: codecov/codecov-action@v1

.github/workflows/release-please.yml

@@ -1,14 +1,15 @@
+name: release-please
+
 on:
   push:
     branches:
       - master
 
-name: release-please
 jobs:
   release-please:
     runs-on: ubuntu-latest
     steps:
-      - uses: GoogleCloudPlatform/[email protected].5
+      - uses: GoogleCloudPlatform/[email protected].7
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           release-type: node

.github/workflows/stale.yml

@@ -1,4 +1,5 @@
-name: "Close stale issues and PRs"
+name: Close stale issues and PRs
+
 on:
   schedule:
   - cron: "0 0 * * *"
@@ -7,14 +8,14 @@ jobs:
   stale:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/stale@v1
+    - uses: actions/stale@v3
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         stale-issue-message: 'This issue is stale because it has been open many days with no activity. It will be closed soon unless the stale label is removed or a comment is made.'
         stale-issue-label: 'stale'
-        exempt-issue-label: 'never stale'
+        exempt-issue-labels: 'never stale'
         stale-pr-message: 'This PR is stale because it has been open many days with no activity. It will be closed soon unless the stale label is removed or a comment is made.'
         stale-pr-label: 'stale'
-        exempt-pr-label: 'never stale'
+        exempt-pr-labels: 'never stale'
         days-before-stale: 90
         days-before-close: 14