Update some plugins to get build working

This may have been due to building with Java 21, newer Maven, or
something else.

Author: headius

gem-assembly-descriptors/src/it/assemble-project-with-gems/application/pom.xml

@@ -56,7 +56,7 @@
       </plugin>   
       <plugin>
 	<artifactId>maven-assembly-plugin</artifactId>
-	<version>2.2-beta-5</version>
+	<version>3.7.1</version>
 	<configuration>
 	  <descriptorRefs>
 	    <descriptorRef>jar-with-dependencies-and-gems</descriptorRef>
@@ -71,7 +71,7 @@
 	  <execution>
 	    <phase>package</phase>
 	    <goals>
-	      <goal>assembly</goal>
+	      <goal>single</goal>
 	    </goals>
 	  </execution>
 	</executions>

parent-mojo/pom.xml

@@ -50,7 +50,7 @@
     <plugins>
       <plugin>
         <artifactId>maven-source-plugin</artifactId>
-        <version>2.4</version>
+        <version>3.2.1</version>
         <executions>
           <execution>
             <goals><goal>jar</goal></goals>

pom.xml

@@ -140,7 +140,7 @@
         </plugin>
         <plugin>
           <artifactId>maven-jar-plugin</artifactId>
-          <version>2.3</version>
+          <version>3.4.1</version>
         </plugin>
         <plugin>
           <artifactId>maven-dependency-plugin</artifactId>