Updating org.clojure/clojure to 2.3.4

Updating org.clojure/clojure to 2.3.4

<table><tr><th>File</th><th>Regex</th><th>Replacement</th><th>Result</th></tr><tr><td>project.clj</td><td>{{library}} &quot;[a-zA-Z0-9.-_]+&quot;</td><td>{{library}} &quot;{{version}}&quot;</td><td>Updated</td></tr></table>

This pull request is created on behalf of @dummy-login