Update Spring version to 5.3.18 (#12456)

Author: puneetbehl

gradle.properties

@@ -39,7 +39,7 @@ slf4jVersion=1.7.36
 spockVersion=2.1-groovy-3.0
 springBootVersion=2.6.4
 springLoadedVersion=1.2.8.RELEASE
-springVersion=5.3.16
+springVersion=5.3.18
 testingSupportVersion=2.4.1
 testingSupportVersionForTests=2.4.1
 tomcatLog4jVersion=8.5.2