Bump org.springframework:spring-framework-bom from 6.1.19 to 6.1.20 (#3908)

Bumps [org.springframework:spring-framework-bom](https://github.com/spring-projects/spring-framework) from 6.1.19 to 6.1.20.
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v6.1.19...v6.1.20)

---
updated-dependencies:
- dependency-name: org.springframework:spring-framework-bom
  dependency-version: 6.1.20
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build.gradle

@@ -70,7 +70,7 @@ ext {
 	springBootVersion = '3.2.12' // docs module
 	springDataVersion = '2024.0.11'
 	springRetryVersion = '2.0.12'
-	springVersion = '6.1.19'
+	springVersion = '6.1.20'
 	zookeeperVersion = '3.8.4'
 
 	idPrefix = 'kafka'