⬆️ Updates actions/cache action to v2.1.6

Signed-off-by: Renovate Bot <[email protected]>

Author: renovate-bot

.github/workflows/ci.yml

@@ -63,7 +63,7 @@ jobs:
       - name: Check Dependency Updates
         run: ./gradlew dependencyUpdates -Drevision=release
 
-      - uses: actions/[email protected].3
+      - uses: actions/[email protected].6
         with:
           path: ~/.gradle/caches
           key: ${{ runner.os }}-gradle-${{ hashFiles('checksum.txt') }}
@@ -91,7 +91,7 @@ jobs:
       - name: Prepare repository
         run: git fetch --unshallow --tags
 
-      - uses: actions/[email protected].3
+      - uses: actions/[email protected].6
         with:
           path: ~/.gradle/caches
           key: ${{ runner.os }}-gradle-${{ hashFiles('checksum.txt') }}
@@ -149,7 +149,7 @@ jobs:
       - name: Prepare repository
         run: git fetch --unshallow --tags
 
-      - uses: actions/[email protected].3
+      - uses: actions/[email protected].6
         with:
           path: ~/.gradle/caches
           key: ${{ runner.os }}-gradle-${{ hashFiles('checksum.txt') }}