Bump org.springframework:spring-framework-bom from 6.1.14 to 6.1.15

Bumps [org.springframework:spring-framework-bom](https://github.com/spring-projects/spring-framework) from 6.1.14 to 6.1.15.
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v6.1.14...v6.1.15)

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

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

gradle/libs.versions.toml

@@ -59,7 +59,7 @@ org-slf4j-log4j-over-slf4j = { module = "org.slf4j:log4j-over-slf4j", version.re
 org-slf4j-slf4j-api = { module = "org.slf4j:slf4j-api", version.ref = "org-slf4j" }
 org-springframework-data-spring-data-bom = "org.springframework.data:spring-data-bom:2024.0.5"
 org-springframework-security-spring-security-bom = "org.springframework.security:spring-security-bom:6.3.4"
-org-springframework-spring-framework-bom = "org.springframework:spring-framework-bom:6.1.14"
+org-springframework-spring-framework-bom = "org.springframework:spring-framework-bom:6.1.15"
 org-springframework-boot-spring-boot-dependencies = { module = "org.springframework.boot:spring-boot-dependencies", version.ref = "org-springframework-boot" }
 org-springframework-boot-spring-boot-gradle-plugin = { module = "org.springframework.boot:spring-boot-gradle-plugin", version.ref = "org-springframework-boot" }
 org-testcontainers-testcontainers-bom = { module = "org.testcontainers:testcontainers-bom", version.ref = "org-testcontainers" }