Dependency(deps): Bump commons-io:commons-io from 2.15.1 to 2.16.0

Bumps commons-io:commons-io from 2.15.1 to 2.16.0.

---
updated-dependencies:
- dependency-name: commons-io:commons-io
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

autograder-core/pom.xml

@@ -157,7 +157,7 @@
         <dependency>
             <groupId>commons-io</groupId>
             <artifactId>commons-io</artifactId>
-            <version>2.15.1</version>
+            <version>2.16.0</version>
         </dependency>