Bump spring-beans in /frameworks/Java/spring-webflux (#7275)

Bumps [spring-beans](https://github.com/spring-projects/spring-framework) from 5.2.0.M2 to 5.2.21.BUILD-SNAPSHOT.
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/commits)

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

Signed-off-by: dependabot[bot] <[email protected]>

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

frameworks/Java/spring-webflux/pom.xml

@@ -113,7 +113,7 @@
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-beans</artifactId>
-            <version>5.2.0.M2</version>
+            <version>5.2.21.BUILD-SNAPSHOT</version>
         </dependency>
 <!-- End of 2.2.0.M1 and 2.2.0.M2 dependency preparations -->
     </dependencies>