. e Fix Java 8 compatibility for maven builds and GitHub actions

- Skip install for test-only module approvaltests-util-tests
- Generate Maven 3.8.8 wrapper in GitHub action for Java 8 compatibility
- Use wrapper instead of system Maven to avoid plugin version conflicts

Author: LarsEckart

.github/workflows/test-jdk-8.yml

@@ -39,13 +39,15 @@ jobs:
     - name: Use local build
       run: |
         sed -i '/<artifactId>approvaltests<\/artifactId>/{N;s/<version>.*<\/version>/<version>100.0.0-SNAPSHOT<\/version>/}' pom.xml
+    - name: Setup Maven Wrapper for Java 8 compatibility
+      run: |
+        mvn wrapper:wrapper -Dmaven=3.8.8
     - name: Run in JDK8
       run: |
         java -version
-        mvn verify
+        ./mvnw verify
     - name: Publish Test Report
       uses: mikepenz/action-junit-report@v5
       if: always()
       with:
         report_paths: '**/target/surefire-reports/*.xml'
-

approvaltests-util-tests/pom.xml

@@ -84,14 +84,6 @@
                 <artifactId>maven-surefire-plugin</artifactId>
                 <version>3.5.3</version>
             </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-jar-plugin</artifactId>
-                <version>3.4.2</version>
-                <configuration>
-                    <skipIfEmpty>true</skipIfEmpty>
-                </configuration>
-            </plugin>
         </plugins>
     </build>
 

approvaltests-util-tests/src/main/resources/README.txt

@@ -0,0 +1 @@
+# Test module - no main classes