Bump actions/cache from v2.1.3 to v2.1.4

Bumps [actions/cache](https://github.com/actions/cache) from v2.1.3 to v2.1.4.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](actions/cache@v2.1.3...26968a0)

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

.github/workflows/maven.yml

@@ -37,7 +37,7 @@ jobs:
       with:
         java-version: 14
     - name: Cache Maven packages
-      uses: actions/cache@v2.1.3
+      uses: actions/cache@v2.1.4
       with:
         path: ~/.m2
         key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}