Upgrade to Spring Cloud Contract 2.2.4.RELEASE

Closes gh-1137

Author: snicoll

initializr-parent/pom.xml

@@ -20,7 +20,7 @@
 		<maven-resolver.version>1.4.2</maven-resolver.version>
 		<maven-resolver-provider.version>3.6.3</maven-resolver-provider.version>
 		<spring-boot.version>2.3.4.RELEASE</spring-boot.version>
-		<spring-cloud-contract.version>2.2.3.RELEASE</spring-cloud-contract.version>
+		<spring-cloud-contract.version>2.2.4.RELEASE</spring-cloud-contract.version>
 	</properties>
 	<scm>
 		<url>${git.url}</url>