chore: bump commons-codec:commons-codec from 1.9 to 1.18.0

Bumps [commons-codec:commons-codec](https://github.com/apache/commons-codec) from 1.9 to 1.18.0.
- [Changelog](https://github.com/apache/commons-codec/blob/master/RELEASE-NOTES.txt)
- [Commits](apache/commons-codec@1.9...rel/commons-codec-1.18.0)

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

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

Author: dependabot[bot]

build.gradle

@@ -29,7 +29,7 @@ subprojects {
     compile "com.fasterxml.jackson.core:jackson-databind:$jacksonDatabindVersion"
     compile "com.google.guava:guava:17.0"
     compile "org.slf4j:slf4j-api:1.7.25"
-    compile "commons-codec:commons-codec:1.9"
+    compile "commons-codec:commons-codec:1.18.0"
     testCompile "junit:junit:4.12"
     testCompile "org.powermock:powermock-module-junit4:$powermockVersion"
     testCompile "org.powermock:powermock-api-mockito:$powermockVersion"