Bump springVersion from 6.1.8 to 6.1.9

Bumps `springVersion` from 6.1.8 to 6.1.9.

Updates `org.springframework:spring-context` from 6.1.8 to 6.1.9
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v6.1.8...v6.1.9)

Updates `org.springframework:spring-test` from 6.1.8 to 6.1.9
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v6.1.8...v6.1.9)

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

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

junit5-spring/build.gradle

@@ -5,7 +5,7 @@ repositories {
 ext {
     slf4jVersion  = '2.0.13'
     logbackVersion  = '1.5.6'
-    springVersion = '6.1.8'
+    springVersion = '6.1.9'
 
     junitJupiterVersion = '5.10.2'
 }