chore(actions): updated yarn cache in actions

Author: liamross

.github/workflows/lint_and_test.yaml

@@ -26,14 +26,15 @@ jobs:
           node-version: ${{ matrix.node-version }}
 
       # https://github.com/actions/cache/blob/master/examples.md#node---yarn
-      - name: Get yarn cache directory
-        id: yarn-cache
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
         run: echo "::set-output name=dir::$(yarn cache dir)"
 
       - name: Use yarn cache
         uses: actions/cache@v1
+        id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
         with:
-          path: ${{ steps.yarn-cache.outputs.dir }}
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
           key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
           restore-keys: |
             ${{ runner.os }}-yarn-