Bump org.springframework.security:spring-security-bom

Bumps the development-dependencies group with 1 update: [org.springframework.security:spring-security-bom](https://github.com/spring-projects/spring-security).


Updates `org.springframework.security:spring-security-bom` from 6.4.11 to 6.4.12
- [Release notes](https://github.com/spring-projects/spring-security/releases)
- [Changelog](https://github.com/spring-projects/spring-security/blob/main/RELEASE.adoc)
- [Commits](spring-projects/spring-security@6.4.11...6.4.12)

---
updated-dependencies:
- dependency-name: org.springframework.security:spring-security-bom
  dependency-version: 6.4.12
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: development-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

build.gradle

@@ -104,7 +104,7 @@ ext {
     springGraphqlVersion = '1.3.6'
     springKafkaVersion = '3.3.10'
     springRetryVersion = '2.0.12'
-    springSecurityVersion = '6.4.11'
+    springSecurityVersion = '6.4.12'
     springVersion = '6.2.12'
     springWsVersion = '4.0.15'
     testcontainersVersion = '1.20.6'