dev: upgrade to current clj-kondo

Author: lread

deps.edn

@@ -19,7 +19,7 @@
            ;;
 
            ;; linting
-           :clj-kondo {:extra-deps {clj-kondo/clj-kondo {:mvn/version "2021.03.31"}}
+           :clj-kondo {:extra-deps {clj-kondo/clj-kondo {:mvn/version "2021.04.23"}}
                        :main-opts ["-m" "clj-kondo.main"]}
 
            :test-common {:extra-deps {org.clojure/test.check {:mvn/version "1.1.0"}}