Bump commons-io:commons-io from 2.5 to 2.14.0 in /backend

Bumps commons-io:commons-io from 2.5 to 2.14.0.

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

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

Author: dependabot[bot]

backend/pom.xml

@@ -36,7 +36,7 @@
     <dependency>
       <groupId>commons-io</groupId>
       <artifactId>commons-io</artifactId>
-      <version>2.5</version>
+      <version>2.14.0</version>
     </dependency>
     <dependency>
       <groupId>org.json</groupId>