fix(deps): bump actions/cache from v2 to v2.1.4

Bumps [actions/cache](https://github.com/actions/cache) from v2 to v2.1.4.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](actions/cache@v2...26968a0)

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/ci.yml

@@ -32,7 +32,7 @@ jobs:
         run: echo "::set-output name=dir::$(npm config get cache)"
 
       - name: Restore cached node_modules ⚡️
-        uses: actions/cache@v2
+        uses: actions/cache@v2.1.4
         with:
           path: ${{ steps.npm-cache.outputs.dir }}
           key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}

.github/workflows/shipjs-trigger.yml

@@ -27,7 +27,7 @@ jobs:
 
       - name: Restore cached node_modules ⚡️
         id: cache
-        uses: actions/cache@v2
+        uses: actions/cache@v2.1.4
         with:
           path: ${{ steps.npm-cache.outputs.dir }}
           key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}