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

Bumps [org.springframework.security:spring-security-bom](https://github.com/spring-projects/spring-security) from 6.5.0-RC1 to 6.5.1-SNAPSHOT.
- [Release notes](https://github.com/spring-projects/spring-security/releases)
- [Changelog](https://github.com/spring-projects/spring-security/blob/main/RELEASE.adoc)
- [Commits](https://github.com/spring-projects/spring-security/commits)

---
updated-dependencies:
- dependency-name: org.springframework.security:spring-security-bom
  dependency-version: 6.5.1-SNAPSHOT
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -39,7 +39,7 @@ org-mongodb-mongodb-driver-reactivestreams = { module = "org.mongodb:mongodb-dri
 org-mongodb-mongodb-driver-sync = { module = "org.mongodb:mongodb-driver-sync", version.ref = "org-mongodb" }
 org-postgresql = "org.postgresql:postgresql:42.7.5"
 org-springframework-data-spring-data-bom = "org.springframework.data:spring-data-bom:2025.0.0-RC1"
-org-springframework-security-spring-security-bom = "org.springframework.security:spring-security-bom:6.5.0-RC1"
+org-springframework-security-spring-security-bom = "org.springframework.security:spring-security-bom:6.5.1-SNAPSHOT"
 org-springframework-spring-framework-bom = "org.springframework:spring-framework-bom:6.2.7"
 org-testcontainers-testcontainers-bom = { module = "org.testcontainers:testcontainers-bom", version = "1.20.6" }
 io-spring-security-release-plugin = "io.spring.gradle:spring-security-release-plugin:1.0.6"