Update to latest GitHub actions (#275)

Author: jonahgraham

.github/workflows/build.yml

@@ -19,21 +19,21 @@ jobs:
           - scout
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - 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'
         cache: maven
     - name: Set up Maven
-      uses: stCarolas/setup-maven@07fbbe97d97ef44336b7382563d66743297e442f # v4.5
+      uses: stCarolas/setup-maven@v5
       with:
         maven-version: 3.9.9
     - name: Build with Maven
       run: mvn clean verify -B -Pepp.p2.${{ matrix.package }} -Pepp.product.${{ matrix.package }} -Pepp.p2.common
     - name: Upload bundle information
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       if: success() || failure()
       with:
         name: bundles.info for ${{ matrix.package }}