Add mapping for 'junit'

Author: jjohannes

src/main/resources/de/jjohannes/gradle/moduledependencies/modules.properties

@@ -15,6 +15,7 @@ io.netty.transport=io.netty:netty-transport
 java.inject=jakarta.inject:jakarta.inject-api
 java.servlet=jakarta.servlet:jakarta.servlet-api
 java.validation=jakarta.validation:jakarta.validation-api
+junit=junit:junit
 org.apache.commons.codec=commons-codec:commons-codec
 org.apache.commons.collections4=org.apache.commons:commons-collections4
 org.apache.commons.compress=org.apache.commons:commons-compress