Migrate build to Spring Develocity Conventions extension.

Author: erichaagdev

.gitignore

@@ -18,4 +18,4 @@ src/ant/.ant-targets-upload-dist.xml
 node
 node_modules
 package-lock.json
-.mvn/.gradle-enterprise
+.mvn/.develocity

.mvn/extensions.xml

@@ -1,13 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <extensions>
 	<extension>
-		<groupId>com.gradle</groupId>
-		<artifactId>gradle-enterprise-maven-extension</artifactId>
-		<version>1.19.3</version>
-	</extension>
-	<extension>
-		<groupId>com.gradle</groupId>
-		<artifactId>common-custom-user-data-maven-extension</artifactId>
-		<version>1.12.4</version>
+		<groupId>io.spring.develocity.conventions</groupId>
+		<artifactId>develocity-conventions-maven-extension</artifactId>
+		<version>0.0.19</version>
 	</extension>
 </extensions>