Updated Clojure to 1.12.0

[dotemacs]

Description of your pull request

Updated Clojure and the test running dependency

Why should it be considered?

It updates the project to the latest stable Clojure version.

Pull request checklist

• The code is consistent with Clojure style guide.
• All code passes the linter (clj-kondo --lint src).
• [ ] You've added tests (if possible) to cover your change(s).
• All tests are passing.
• The commits are consistent with the Git commit style guide.
• You've updated the changelog (if adding/changing user-visible functionality).