Bump org.springframework:spring-framework-bom from 5.3.30 to 5.3.31

Bumps [org.springframework:spring-framework-bom](https://github.com/spring-projects/spring-framework) from 5.3.30 to 5.3.31.
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.3.30...v5.3.31)

---
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>

gradle/libs.versions.toml

@@ -15,7 +15,7 @@ org-mockito = "4.8.1"
 org-opensaml4 = "4.1.0"
 org-opensaml3 = "3.4.6"
 org-slf4j = "1.7.36"
-org-springframework = "5.3.30"
+org-springframework = "5.3.31"
 
 [libraries]
 ch-qos-logback-logback-classic = "ch.qos.logback:logback-classic:1.2.12"