chore(deps): bump commons-codec:commons-codec from 1.19.0 to 1.21.0

Bumps [commons-codec:commons-codec](https://github.com/apache/commons-codec) from 1.19.0 to 1.21.0.
- [Changelog](https://github.com/apache/commons-codec/blob/master/RELEASE-NOTES.txt)
- [Commits](apache/commons-codec@rel/commons-codec-1.19.0...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
...

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

Author: dependabot[bot]

build.gradle

@@ -256,7 +256,7 @@ dependencies {
     testImplementation group: 'org.apache.kafka', name: 'kafka-streams', version: kafkaVersion
     testImplementation group: "io.confluent", name: "kafka-streams-avro-serde", version: confluentVersion
     testImplementation "io.confluent:kafka-connect-avro-converter:" + confluentVersion
-    testImplementation group: 'commons-codec', name: 'commons-codec', version: '1.19.0'
+    testImplementation group: 'commons-codec', name: 'commons-codec', version: '1.21.0'
     testImplementation 'org.hamcrest:hamcrest:3.0'
     testImplementation 'org.hamcrest:hamcrest-library:3.0'
     testImplementation 'org.mockito:mockito-junit-jupiter'