Bump commons-codec:commons-codec from 1.20.0 to 1.21.0 in /Plan (#4448)

Bumps [commons-codec:commons-codec](https://github.com/apache/commons-codec) from 1.20.0 to 1.21.0.
- [Changelog](https://github.com/apache/commons-codec/blob/master/RELEASE-NOTES.txt)
- [Commits](apache/commons-codec@rel/commons-codec-1.20.0...rel/commons-codec-1.21.0)

---
updated-dependencies:
- dependency-name: commons-codec:commons-codec
  dependency-version: 1.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]

Plan/build.gradle

@@ -70,7 +70,7 @@ subprojects {
 
         commonsTextVersion = "1.15.0"
         commonsCompressVersion = "1.28.0"
-        commonsCodecVersion = "1.20.0"
+        commonsCodecVersion = "1.21.0"
         caffeineVersion = "3.2.3"
         jetbrainsAnnotationsVersion = "26.0.2"
         jettyVersion = "11.0.26"