[workflow]: Bump actions/cache from 2 to 4

Bumps [actions/cache](https://github.com/actions/cache) from 2 to 4.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v2...v4)

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

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

Author: dependabot[bot]

.github/workflows/build.yml

@@ -23,7 +23,7 @@ jobs:
           java-version: ${{ matrix.java_version }}
           distribution: 'zulu'
       - name: Maven cache
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         env:
           cache-name: maven-cache
         with:

.github/workflows/jdk-ea.yml

@@ -27,7 +27,7 @@ jobs:
         website: jdk.java.net
         release: ${{ matrix.java_version }}
     - name: Maven cache
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       env:
         cache-name: maven-cache
       with: