Update to Spring Framework 6.1.9

Closes gh-1646

gradle.properties

@@ -2,7 +2,7 @@ version=1.2.5-SNAPSHOT
 org.gradle.jvmargs=-Xmx3g -XX:+HeapDumpOnOutOfMemoryError
 org.gradle.parallel=true
 org.gradle.caching=true
-springFrameworkVersion=6.1.6
+springFrameworkVersion=6.1.9
 springSecurityVersion=6.2.4
 springJavaformatVersion=0.0.41
 checkstyleToolVersion=8.34