Update to assertj-core 3.25.1

Closes gh-1513

dependencies/spring-authorization-server-dependencies.gradle

@@ -14,7 +14,7 @@ dependencies {
 		api "com.nimbusds:nimbus-jose-jwt:9.37.3"
 		api "jakarta.servlet:jakarta.servlet-api:6.0.0"
 		api "org.junit.jupiter:junit-jupiter:5.10.1"
-		api "org.assertj:assertj-core:3.24.2"
+		api "org.assertj:assertj-core:3.25.1"
 		api "org.mockito:mockito-core:4.11.0"
 		api "com.squareup.okhttp3:mockwebserver:4.12.0"
 		api "com.squareup.okhttp3:okhttp:4.12.0"