Bump spring-beans from 2.5.6-SEC02 to 5.2.20.RELEASE

Bumps [spring-beans](https://github.com/spring-projects/spring-framework) from 2.5.6-SEC02 to 5.2.20.RELEASE.
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/commits/v5.2.20.RELEASE)

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

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/pom.xml b/pom.xml
index 5e06860..496f988 100644
--- a/pom.xml
+++ b/pom.xml
@@ -76,7 +76,7 @@
         <cxfVersion>2.1.10</cxfVersion>
         <axis2Version>1.6.1_1</axis2Version>
         <axiomVersion>1.2.12_1</axiomVersion>
-        <springVersion>2.5.6-SEC02</springVersion>
+        <springVersion>5.2.20.RELEASE</springVersion>
         <xbeanVersion>3.11</xbeanVersion>
         <jetty>jetty8</jetty>
         <jetty.version>8.0.0.M2</jetty.version>