Bump actions/cache from 5 to 6

Bumps [actions/cache](https://github.com/actions/cache) from 5 to 6.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v5...v6)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/release-beta.yml

@@ -22,13 +22,13 @@ jobs:
           bundler-cache: true
 
       - name: Cache Gradle
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ~/.gradle/caches/
           key: cache-clean-gradle-${{ matrix.os }}-${{ matrix.jdk }}
 
       - name: Cache Gradle Wrapper
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ~/.gradle/wrapper/
           key: cache-clean-wrapper-${{ matrix.os }}-${{ matrix.jdk }}

.github/workflows/release-prod.yml

@@ -18,13 +18,13 @@ jobs:
           bundler-cache: true
 
       - name: Cache Gradle
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ~/.gradle/caches/
           key: cache-clean-gradle-${{ matrix.os }}-${{ matrix.jdk }}
 
       - name: Cache Gradle Wrapper
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ~/.gradle/wrapper/
           key: cache-clean-wrapper-${{ matrix.os }}-${{ matrix.jdk }}