Bump actions/setup-java from 1 to 4

Bumps [actions/setup-java](https://github.com/actions/setup-java) from 1 to 4.
- [Release notes](https://github.com/actions/setup-java/releases)
- [Commits](actions/setup-java@v1...v4)

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

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

.github/workflows/buildbot.yml

@@ -15,7 +15,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Set up JDK 11
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@v4
         with:
           java-version: 11
       - name: Cache Gradle packages

.github/workflows/release.yml

@@ -10,7 +10,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Set up JDK 11
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@v4
         with:
           java-version: 11
       - name: Decrypt private key