Upgrade to Spring Security 6.0 M1.

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See #2100

Author: mp911de

spring-data-rest-tests/spring-data-rest-tests-security/pom.xml

@@ -14,7 +14,7 @@
 
 	<properties>
 		<java-module-name>spring.data.rest.tests.security</java-module-name>
-		<spring-security.version>6.0.0-SNAPSHOT</spring-security.version>
+		<spring-security.version>6.0.0-M1</spring-security.version>
 	</properties>
 
 	<dependencies>