chore(deps): bump actions/cache from 3 to 4 (#54)

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

.github/workflows/build-pr.yml

@@ -19,7 +19,7 @@ jobs:
           distribution: 'temurin'
           java-version: 17
       - name: Cache local Maven repository
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.m2/repository
           key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml, **/target-platform.target') }}

.github/workflows/build.yml

@@ -28,7 +28,7 @@ jobs:
           gpg-passphrase: MAVEN_GPG_PASSPHRASE # env variable for GPG private key passphrase
 
       - name: Cache local Maven repository
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.m2/repository
           key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml, **/target-platform.target') }}