chore(deps): update actions/cache action to v2

Author: renovate-bot

.github/workflows/main.yml

@@ -27,14 +27,14 @@ jobs:
         id: yarn-cache
         run: echo "::set-output name=dir::$(yarn cache dir)"
       - name: Cache Yarn
-        uses: actions/cache@v1
+        uses: actions/cache@v2
         with:
           path: ${{ steps.yarn-cache.outputs.dir }}
           key: ${{ runner.os }}-${{matrix.node_version}}-yarn-${{ hashFiles('yarn.lock') }}
           restore-keys: |
             ${{ runner.os }}-${{matrix.node_version}}-yarn-
       - name: Cache Jest
-        uses: actions/cache@v1
+        uses: actions/cache@v2
         with:
           path: .cache/jest
           key: ${{ runner.os }}-${{matrix.node_version}}-jest-${{ hashFiles('yarn.lock') }}

.github/workflows/release.yml

@@ -32,7 +32,7 @@ jobs:
         id: yarn-cache
         run: echo "::set-output name=dir::$(yarn cache dir)"
       - name: Cache Yarn
-        uses: actions/cache@v1
+        uses: actions/cache@v2
         with:
           path: ${{ steps.yarn-cache.outputs.dir }}
           key: ${{ runner.os }}-14-15-yarn-${{ hashFiles('yarn.lock') }}