Bump org.springframework:spring-framework-bom from 6.1.7 to 6.1.8

Bumps [org.springframework:spring-framework-bom](https://github.com/spring-projects/spring-framework) from 6.1.7 to 6.1.8.
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v6.1.7...v6.1.8)

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

Signed-off-by: dependabot[bot] <support@github.com>

build.gradle

@@ -114,7 +114,7 @@ ext {
     springKafkaVersion = '3.2.0'
     springRetryVersion = '2.0.6'
     springSecurityVersion = '6.3.0'
-    springVersion = '6.1.7'
+    springVersion = '6.1.8'
     springWsVersion = '4.0.11'
     testcontainersVersion = '1.19.8'
     tomcatVersion = '10.1.24'