Bump struts2-core from 2.3.15 to 2.5.30 in /Hello_World_Struts2

Bumps [struts2-core](https://github.com/apache/struts) from 2.3.15 to 2.5.30.
- [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>
diff --git a/Hello_World_Struts2/pom.xml b/Hello_World_Struts2/pom.xml
index 3ef27df..bbdcedd 100644
--- a/Hello_World_Struts2/pom.xml
+++ b/Hello_World_Struts2/pom.xml
@@ -31,7 +31,7 @@
 		<dependency>
 			<groupId>org.apache.struts</groupId>
 			<artifactId>struts2-core</artifactId>
-			<version>2.3.15</version>
+			<version>2.5.30</version>
 		</dependency>
 
 		<dependency>