build(deps-dev): bump commons-fileupload:commons-fileupload in /core

Bumps commons-fileupload:commons-fileupload from 1.2.1 to 1.6.0.

---
updated-dependencies:
- dependency-name: commons-fileupload:commons-fileupload
  dependency-version: 1.6.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

core/pom.xml

@@ -691,7 +691,7 @@ Copyright (c) 2012 Jeremy Long. All Rights Reserved.
                 <dependency>
                     <groupId>commons-fileupload</groupId>
                     <artifactId>commons-fileupload</artifactId>
-                    <version>1.2.1</version>
+                    <version>1.6.0</version>
                     <scope>test</scope>
                     <optional>true</optional>
                 </dependency>