build(deps): bump commons-io:commons-io from 2.20.0 to 2.21.0

Bumps [commons-io:commons-io](https://github.com/apache/commons-io) from 2.20.0 to 2.21.0.
- [Changelog](https://github.com/apache/commons-io/blob/master/RELEASE-NOTES.txt)
- [Commits](apache/commons-io@rel/commons-io-2.20.0...rel/commons-io-2.21.0)

---
updated-dependencies:
- dependency-name: commons-io:commons-io
  dependency-version: 2.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

build.gradle.kts

@@ -46,7 +46,7 @@ dependencies {
 
     testImplementation("ch.qos.logback:logback-classic:1.5.21")
     testImplementation("commons-codec:commons-codec:1.19.0")
-    testImplementation("commons-io:commons-io:2.20.0")
+    testImplementation("commons-io:commons-io:2.21.0")
     testImplementation("org.hamcrest:hamcrest:3.0")
     testImplementation("org.jetbrains:annotations:26.0.2-1")
     testImplementation("org.junit.jupiter:junit-jupiter-api:5.11.4")