Bump commons-io:commons-io from 2.18.0 to 2.21.0

Bumps [commons-io:commons-io](https://github.com/apache/commons-io) from 2.18.0 to 2.21.0.
- [Changelog](https://github.com/apache/commons-io/blob/master/RELEASE-NOTES.txt)
- [Commits](apache/commons-io@rel/commons-io-2.18.0...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] <support@github.com>

Author: dependabot[bot]

bom/build.gradle

@@ -35,7 +35,7 @@ ext {
     commonsconfiguration2Version = '2.10.1'
     commonsconfigurationVersion = '1.10'
 
-    commonsioVersion = '2.18.0'
+    commonsioVersion = '2.21.0'
     commonsloggingVersion = '1.3.2'
     // TODO: Version 1.12.0 breaks XTDB because of a change in lucene's library names
     commonstextVersion = '1.11.0'