Bump actions/cache from v2.1.4 to v2.1.5

Bumps [actions/cache](https://github.com/actions/cache) from v2.1.4 to v2.1.5.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](https://github.com/actions/cache/compare/v2.1.4...1a9e2138d905efd099035b49d8b7a3888c653ca8)

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

.github/workflows/build.yml

@@ -35,7 +35,7 @@ jobs:
           java-version: ${{ matrix.java }}
           architecture: x64
       - name: Cache Maven packages
-        uses: actions/cache@v2.1.4
+        uses: actions/cache@v2.1.5
         with:
           path: ~/.m2
           key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}

.github/workflows/release.yml

@@ -23,7 +23,7 @@ jobs:
           architecture: x64
 
       - name: Cache Maven packages
-        uses: actions/cache@v2.1.4
+        uses: actions/cache@v2.1.5
         with:
           path: ~/.m2
           key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}