Upgrade to Spring Framework 6.1.12

Closes sgh-41725

Author: snicoll

gradle.properties

@@ -13,7 +13,7 @@ junitJupiterVersion=5.10.3
 kotlinVersion=1.9.25
 mavenVersion=3.9.4
 nativeBuildToolsVersion=0.9.28
-springFrameworkVersion=6.1.12-SNAPSHOT
+springFrameworkVersion=6.1.12
 springFramework60xVersion=6.0.21
 tomcatVersion=10.1.28