build java 11 and jar-with-dependencies

pom.xml

@@ -9,10 +9,31 @@
     <version>1.0-SNAPSHOT</version>
 
     <properties>
-        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>17</maven.compiler.target>
+        <maven.compiler.target>11</maven.compiler.target>
     </properties>
 
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>maven-assembly-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>single</goal>
+                        </goals>
+                    </execution>
+                </executions>
+                <configuration>
+                    <descriptorRefs>
+                        <descriptorRef>jar-with-dependencies</descriptorRef>
+                    </descriptorRefs>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
     <dependencies>
         <!-- https://mvnrepository.com/artifact/org.apache.qpid/protonj2-client -->
         <dependency>