Bump commons-fileupload from 1.4 to 1.5 in /server

Bumps commons-fileupload from 1.4 to 1.5.

---
updated-dependencies:
- dependency-name: commons-fileupload:commons-fileupload
  dependency-type: direct:production
...

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

server/pom.xml

@@ -193,7 +193,7 @@
         <dependency>
             <groupId>commons-fileupload</groupId>
             <artifactId>commons-fileupload</artifactId>
-            <version>1.4</version>
+            <version>1.5</version>
         </dependency>
         <dependency>
             <groupId>commons-validator</groupId>