Continue with GHA updates

Author: kwart

.github/workflows/pr-builder.yaml

@@ -13,11 +13,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
-      - name: Set up JDK 8
-        uses: actions/setup-java@v2
+      - uses: actions/checkout@v4
+      - uses: actions/setup-java@v4
         with:
+          distribution: 'temurin' # See 'Supported distributions' for available options
           java-version: '8'
-          distribution: 'adopt'
+          cache: 'maven'
       - name: Build with Maven
         run: mvn --batch-mode --update-snapshots verify

.github/workflows/upload-release.yaml

@@ -13,23 +13,14 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
-      - name: Set up Apache Maven Central
-        uses: actions/setup-java@v2
+      - uses: actions/checkout@v4
+      - uses: actions/setup-java@v4
         with:
-          java-version: 8
-          distribution: 'adopt'
-
-      - name: Cache Maven packages
-        uses: actions/cache@v2
-        with:
-          path: ~/.m2
-          key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
-          restore-keys: ${{ runner.os }}-m2
-
+          distribution: 'temurin' # See 'Supported distributions' for available options
+          java-version: '8'
+          cache: 'maven'
       - name: Maven build
         run: mvn --batch-mode clean install
-
       - name: Upload binaries to release
         uses: svenstaro/upload-release-action@483c1e56f95e88835747b1c7c60581215016cbf2
         with: