Upgrade to Spring Boot 4.0 M3.

Author: odrotbohm

server/pom.xml

@@ -12,7 +12,7 @@ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/ma
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.0.0-SNAPSHOT</version>
+		<version>4.0.0-M3</version>
 	</parent>
 
 	<properties>