ci: update workflow

Author: ylemkimon

.github/workflows/ci.yml

@@ -9,18 +9,9 @@ on:
 jobs:
   test:
     runs-on: ubuntu-latest
-    if: |
-      !contains(toJSON(github.event.commits.*.message), '[skip ci]') &&
-      !contains(toJSON(github.event.commits.*.message), '[ci skip]')
     strategy:
       matrix:
-        node: [10, 12, 14]
-        eslint: [6, 7]
-        test-node: [false]
-        include:
-        - node: 14
-          eslint: 6
-          test-node: 8
+        node: [12, 14, 16]
 
     steps:
     - uses: actions/checkout@v2
@@ -33,7 +24,7 @@ jobs:
         node-version: ${{ matrix.node }}
 
     - name: Install dependencies
-      run: yarn --immutable
+      run: yarn
       env:
         YARN_ENABLE_SCRIPTS: 0 # disable postinstall scripts
 
@@ -43,22 +34,15 @@ jobs:
     - name: Build plugin
       run: yarn build
 
-    - name: Use Node.js ${{ matrix.test-node }} for testing
-      uses: actions/setup-node@v1
-      if: matrix.test-node
-      with:
-        node-version: ${{ matrix.test-node }}
-
-    - name: Use Yarn 1
-      run: echo "::set-env name=YARN_IGNORE_PATH::1"
-      if: matrix.test-node && matrix.test-node < 10
-
     - name: Run tests
       run: |
         cd test
-        YARN_CHECKSUM_BEHAVIOR=update yarn
-        yarn add -D eslint@${{ matrix.eslint }}
+        yarn
+        yarn add -D eslint
         yarn test
+      env:
+        YARN_CHECKSUM_BEHAVIOR: update
+        YARN_ENABLE_IMMUTABLE_INSTALLS: 0
 
   release:
     runs-on: ubuntu-latest
@@ -70,13 +54,13 @@ jobs:
       with:
         persist-credentials: false # minimize exposure and prevent accidental pushes
 
-    - name: Use Node.js 12
+    - name: Use Node.js 16
       uses: actions/setup-node@v1
       with:
-        node-version: 12
+        node-version: 16
 
     - name: Install dependencies
-      run: yarn --immutable
+      run: yarn
       env:
         YARN_ENABLE_SCRIPTS: 0 # disable postinstall scripts