katas

Merge pull request #5 from SolangeUG/dependabot/maven/middle-number/org.assertj-assertj-core-3.27.7

Bump org.assertj:assertj-core from 3.21.0 to 3.27.7 in /middle-number

Bump org.apache.commons:commons-lang3 in /middle-number (#4)

Add a basic implementation of the middle-number kata

Add a simple middle-number kata