Bump spring-security-oauth2 from 2.5.1.RELEASE to 2.5.2.RELEASE

Bumps [spring-security-oauth2](https://github.com/SpringSource/spring-security-oauth) from 2.5.1.RELEASE to 2.5.2.RELEASE.
- [Release notes](https://github.com/SpringSource/spring-security-oauth/releases)
- [Commits](https://github.com/SpringSource/spring-security-oauth/compare/2.5.1.RELEASE...2.5.2.RELEASE

)

---
updated-dependencies:
- dependency-name: org.springframework.security.oauth:spring-security-oauth2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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