[bot][dev]: Bump actions/cache from 3 to 4

Bumps [actions/cache](https://github.com/actions/cache) from 3 to 4.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v3...v4)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/full-downstream.yml

@@ -45,7 +45,7 @@ jobs:
           check-latest: true
       # See https://docs.github.com/en/actions/guides/building-and-testing-java-with-maven#caching-dependencies
       - name: Cache Maven packages
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.m2
           key: ${{ runner.os }}-${{ matrix.java-version }}-m2-${{ hashFiles('**/pom.xml') }}

.github/workflows/gradle.yml

@@ -50,7 +50,7 @@ jobs:
           java-version: ${{ matrix.java-version }}
           check-latest: true
       - name: Cache Gradle packages
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ~/.gradle/caches