Update dependency lein-parent:lein-parent to v0.3.9 (#13)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

project.clj

@@ -56,5 +56,5 @@
                                     [])))}
              :testutils {:source-paths ^:replace ["test/unit" "test/integration"]}}
 
-  :plugins [[lein-parent "0.3.7"]
+  :plugins [[lein-parent "0.3.9"]
             [puppetlabs/i18n "0.8.0" :hooks false]])