Bump org.springframework:spring-beans in /modernizer-maven-plugin

Bumps [org.springframework:spring-beans](https://github.com/spring-projects/spring-framework) from 5.3.18 to 5.3.20.
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v5.3.18...v5.3.20)

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

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

modernizer-maven-plugin/pom.xml

@@ -102,7 +102,7 @@
     <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-beans</artifactId>
-      <version>5.3.18</version>
+      <version>5.3.20</version>
       <scope>test</scope>
     </dependency>
     <dependency>