Add secrets to workflow

Author: meier-rene

.github/workflows/maven.yaml

@@ -23,5 +23,20 @@ jobs:
           java-version: '21'
           cache: maven
 
+      - name: Configure Maven for GitHub Packages
+        run: |
+          mkdir -p ~/.m2
+          cat > ~/.m2/settings.xml <<EOF
+          <settings>
+            <servers>
+              <server>
+                <id>github</id>
+                <username>${{ github.actor }}</username>
+                <password>${{ secrets.GITHUB_TOKEN }}</password>
+              </server>
+            </servers>
+          </settings>
+          EOF
+
       - name: Build and test with Maven
         run: mvn -B package