Bump org.springframework:spring-framework-bom from 6.0.19 to 6.0.20

Bumps [org.springframework:spring-framework-bom](https://github.com/spring-projects/spring-framework) from 6.0.19 to 6.0.20.
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v6.0.19...v6.0.20)

---
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]>

build.gradle

@@ -72,7 +72,7 @@ ext {
 	springBootVersion = '3.0.13' // docs module
 	springDataVersion = '2022.0.12'
 	springRetryVersion = '2.0.6'
-	springVersion = '6.0.19'
+	springVersion = '6.0.20'
 	zookeeperVersion = '3.6.4'
 
 	idPrefix = 'kafka'