Check dependencies' bytecode compatibility

Author: tbroyer

pom.xml

@@ -277,6 +277,37 @@
           </extraArtifacts>
         </configuration>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-enforcer-plugin</artifactId>
+        <version>3.4.1</version>
+        <executions>
+          <execution>
+            <goals>
+              <goal>enforce</goal>
+            </goals>
+          </execution>
+        </executions>
+        <configuration>
+          <rules>
+            <enforceBytecodeVersion>
+              <maxJdkVersion>${targetJdk}</maxJdkVersion>
+              <ignoredScopes>
+                <scope>provided</scope>
+                <scope>test</scope>
+              </ignoredScopes>
+              <ignoreOptionals />
+            </enforceBytecodeVersion>
+          </rules>
+        </configuration>
+        <dependencies>
+          <dependency>
+            <groupId>org.codehaus.mojo</groupId>
+            <artifactId>extra-enforcer-rules</artifactId>
+            <version>1.7.0</version>
+          </dependency>
+        </dependencies>
+      </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-site-plugin</artifactId>
@@ -376,14 +407,6 @@
           <plugin>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-enforcer-plugin</artifactId>
-            <version>3.3.0</version>
-            <executions>
-              <execution>
-                <goals>
-                  <goal>enforce</goal>
-                </goals>
-              </execution>
-            </executions>
             <configuration>
               <rules>
                 <requireJavaVersion>