chore: Bump yarn source version

.github/workflows/ci-workflow.yml

@@ -13,22 +13,17 @@ jobs:
     steps:
       - uses: actions/checkout@master
 
-      - name: "Use Node.js 10.x"
+      - name: "Use Node.js 12.x"
         uses: actions/setup-node@v1
         with:
-          node-version: '10.x'
+          node-version: "12.x"
 
-      - name: 'Check that the Yarn files don''t change on new installs (fix w/ "yarn install")'
+      - name: "Check that the Yarn files don't change on new installs (fix w/ `yarn install`)"
         run: |
           yarn --immutable --immutable-cache
-        env:
-          YARN_ENABLE_NETWORK: 0
 
       - name: "Check that the cache files are consistent with their remote sources"
-        run: |
-          if [[ $(git diff --name-only "$(git merge-base origin/"$TARGET_BRANCH" HEAD)" HEAD -- .yarn/{cache,virtual} | wc -l) -gt 0 ]]; then
-            yarn --immutable --immutable-cache --check-cache
-          fi
+        run: yarn --immutable --immutable-cache --check-cache
         if: |
           github.event.pull_request != ''
         env:
@@ -41,7 +36,7 @@ jobs:
           github.event.pull_request != ''
       - name: "Check that the code is formatted"
         run: |
-          yarn format:files --chec 
+          yarn format:files --check
 
   acceptance:
     strategy:
@@ -64,7 +59,10 @@ jobs:
       - name: "Use Node.js ${{matrix.node}}.x"
         uses: actions/setup-node@master
         with:
-          version: ${{matrix.node}}.x
+          node-version: ${{matrix.node}}.x
+
+      - name: "Install dependencies"
+        run: yarn
 
       - name: "Build the plugin"
         run: |