Bump actions/setup-java from 3 to 4 (#164)

Bumps [actions/setup-java](https://github.com/actions/setup-java) from 3 to 4.
- [Release notes](https://github.com/actions/setup-java/releases)
- [Commits](actions/setup-java@v3...v4)

---
updated-dependencies:
- dependency-name: actions/setup-java
  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/gradle.yml

@@ -27,7 +27,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Set up Java
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
           java-version: ${{ matrix.java }}

.github/workflows/javadocs.yml

@@ -23,7 +23,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Set up JDK 21
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           java-version: 21
           distribution: 'temurin'