Update GitHub workflows to use latest action versions and JDK 24

Upgraded `actions/checkout` and `actions/upload-artifact` to v4, and `actions/setup-java` to v4 with JDK 24. Adjusted macOS and build workflows accordingly.

Author: dlemmermann

.github/workflows/build.yml

@@ -12,10 +12,10 @@ jobs:
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0  # Shallow clones should be disabled for a better relevancy of analysis
-      - name: Set up JDK 17
-        uses: actions/setup-java@v1
+      - name: Set up JDK 24
+        uses: actions/setup-java@v4
         with:
-          java-version: 17
+          java-version: 24
 #      - name: Cache Maven packages
 #        uses: actions/cache@v1
 #        with:

.github/workflows/macos.yml

@@ -4,7 +4,7 @@ jobs:
   build:
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Setup Gluon's GraalVM
         uses: gluonhq/setup-graalvm@master
@@ -72,7 +72,7 @@ jobs:
           echo ::set-output name=path::target/gluonfx/x86_64-darwin/HelloGluon-1.0.0.pkg
 
       - name: Upload (pkg store)
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: PackageAppStore
           path: ${{ steps.outputfilestore.outputs.path }}