Bump spring-beans from 5.1.6.RELEASE to 5.2.20.RELEASE

Bumps [spring-beans](https://github.com/spring-projects/spring-framework) from 5.1.6.RELEASE to 5.2.20.RELEASE.
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v5.1.6.RELEASE...v5.2.20.RELEASE)

---
updated-dependencies:
- dependency-name: org.springframework:spring-beans
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pom.xml

@@ -96,6 +96,6 @@
     </site>
   </distributionManagement>
   <properties>
-    <org.springframework.version>5.1.6.RELEASE</org.springframework.version>
+    <org.springframework.version>5.2.20.RELEASE</org.springframework.version>
   </properties>
 </project>