Bump actions/cache from v2.1.2 to v2.1.3

Bumps [actions/cache](https://github.com/actions/cache) from v2.1.2 to v2.1.3.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](actions/cache@v2.1.2...0781355)

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

.github/workflows/ci.yml

@@ -23,7 +23,7 @@ jobs:
       with:
         java-version: 1.8
     - name: Cache the Maven packages to speed up build
-      uses: actions/cache@v2.1.2
+      uses: actions/cache@v2.1.3
       with:
         path: ~/.m2
         key: m2-${{ hashFiles('**/pom.xml') }}