Bump org.apache.struts:struts2-core from 2.5.31 to 2.5.33

Bumps [org.apache.struts:struts2-core](https://github.com/apache/struts) from 2.5.31 to 2.5.33.
- [Release notes](https://github.com/apache/struts/releases)
- [Commits](https://github.com/apache/struts/commits)

---
updated-dependencies:
- dependency-name: org.apache.struts:struts2-core
  dependency-type: direct:production
...

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

pom.xml

@@ -18,7 +18,7 @@
   <!-- Common Software Dependency Versions -->
   <properties>
     <asm-version>8.0.1</asm-version>
-    <struts-version>2.5.31</struts-version>
+    <struts-version>2.5.33</struts-version>
     <gwt-version>2.4.0</gwt-version>
     <spring-version>5.2.24.RELEASE</spring-version>
     <csv-entities-version>1.1.7</csv-entities-version>