Bump actions/cache from v2.1.4 to v2.1.5 (#7234)

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](actions/cache@v2.1.4...1a9e213)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/gradle_branch.yml

@@ -19,7 +19,7 @@ jobs:
         distribution: 'adopt'
         java-version: '8'
     - name: Cache Gradle packages
-      uses: actions/cache@v2.1.4
+      uses: actions/cache@v2.1.5
       with:
         path: ~/.gradle/caches
         key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}

.github/workflows/gradle_jdk11.yml

@@ -21,7 +21,7 @@ jobs:
         distribution: 'adopt'
         java-version: '11'
     - name: Cache Gradle packages
-      uses: actions/cache@v2.1.4
+      uses: actions/cache@v2.1.5
       with:
         path: ~/.gradle/caches
         key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}

.github/workflows/gradle_pr.yml

@@ -19,7 +19,7 @@ jobs:
         distribution: 'adopt'
         java-version: '8'
     - name: Cache Gradle packages
-      uses: actions/cache@v2.1.4
+      uses: actions/cache@v2.1.5
       with:
         path: ~/.gradle/caches
         key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}

.github/workflows/gradle_release.yml

@@ -32,7 +32,7 @@ jobs:
         distribution: 'adopt'
         java-version: '8'
     - name: Cache Gradle packages
-      uses: actions/cache@v2.1.4
+      uses: actions/cache@v2.1.5
       with:
         path: ~/.gradle/caches
         key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}

.github/workflows/gradle_snapshot.yml

@@ -29,7 +29,7 @@ jobs:
         distribution: 'adopt'
         java-version: '8'
     - name: Cache Gradle packages
-      uses: actions/cache@v2.1.4
+      uses: actions/cache@v2.1.5
       with:
         path: ~/.gradle/caches
         key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}