Upgrade to Spring Plugin 3.0 M1.

Fixes #1541

Author: odrotbohm

parent/pom.xml

@@ -128,7 +128,7 @@
 		<slf4j>1.7.32</slf4j>
 		<spring>6.0.0-M2</spring>
 		<spring-hateoas>2.0.0-SNAPSHOT</spring-hateoas>
-		<spring-plugin>3.0.0-SNAPSHOT</spring-plugin>
+		<spring-plugin>3.0.0-M1</spring-plugin>
 		<servlet-api>5.0.0</servlet-api>
 		<testcontainers>1.16.2</testcontainers>
 		<validation>3.0.0</validation>