Update spring security to v6.5.6

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

gradle.properties

@@ -4,7 +4,7 @@ org.gradle.jvmargs=-XX:MaxMetaspaceSize=512m -Xmx2g
 springBoot=3.5.6
 springRetry=2.0.4
 springWebflux=6.2.12
-springSecurity=6.5.5
+springSecurity=6.5.6
 
 # logging libs
 slf4j=2.0.17