(maint) Move clojure/test.check to dev profile and update to 1.1.1

This commit moves the `clojure/test.check` dependency to the `dev` lein
profile, since it is only used in tests. This will prevent it from being
picked up transitively by other projects that depend on `jdbc-util`.
Previously, this could sometimes cause ambiguous dependency resolution,
since other projects, notably jar-jar and puppetdb, also pull in
`clojure/test.check`, recently at a different version than this library.

In addition to moving it to a dev dependency, this commit also updates
the test library to the version used by other projects in the PE
ecosystem.

project.clj

@@ -8,7 +8,6 @@
   :pedantic? :abort
   :dependencies [[org.clojure/clojure]
                  [org.clojure/java.jdbc]
-                 [org.clojure/test.check "0.9.0"]
                  [org.postgresql/postgresql]
                  [migratus "1.3.5" :exclusions [org.clojure/clojure]]
                  [com.zaxxer/HikariCP]
@@ -19,7 +18,8 @@
                  [cheshire]]
 
   :profiles {:dev {:dependencies [[org.slf4j/slf4j-api]
-                                  [org.slf4j/log4j-over-slf4j]]}}
+                                  [org.slf4j/log4j-over-slf4j]
+                                  [org.clojure/test.check "1.1.1"]]}}
 
   :plugins [[lein-release "1.0.9"]
             [lein-parent "0.3.7"]