build(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](https://github.com/actions/cache/compare/v2...26968a09c0ea4f3e233fdddbafd1166051a095f6)

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

.github/workflows/code-samples.yml

@@ -49,7 +49,7 @@ jobs:
       - name: Fetch Sources
         uses: actions/checkout@v2
       - name: Setup Cache
-        uses: actions/cache@v2
+        uses: actions/cache@v2.1.4
         with:
           path: ~/.gradle/caches
           key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}

.github/workflows/docs.yml

@@ -20,7 +20,7 @@ jobs:
         shell: bash
       - name: Setup Cache
         id: cache
-        uses: actions/cache@v2
+        uses: actions/cache@v2.1.4
         with:
           path: ~/.verifier
           key: ${{ runner.os }}-verifier-${{ steps.get-version.outputs.version }}