Run GH verification build on Linux, Windows and macOS

Fixes eclipse-m2e#1080

.github/workflows/maven.yml

@@ -12,16 +12,19 @@ on:
 jobs:
   build:
 
-    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
     timeout-minutes: 45
 
     steps:
     - uses: actions/checkout@v3
       with:
         fetch-depth: 0
         submodules: true
-    - name: Set up JDK 17
-      uses: actions/setup-java@v3
+    - uses: actions/setup-java@v3
       with:
         java-version: '17'
         distribution: 'temurin'
@@ -40,7 +43,7 @@ jobs:
     - name: Upload Test Results
       uses: actions/upload-artifact@v3
       with:
-        name: test-results
+        name: test-results-${{ matrix.os }}
         if-no-files-found: error
         path: |
           ${{ github.workspace }}/**/target/surefire-reports/*.xml
@@ -52,4 +55,4 @@ jobs:
       uses: actions/upload-artifact@v3
       with:
         name: Event File
-        path: ${{ github.event_path }}
+        path: ${{ github.event_path }}