Move the clj-tuple exclusion to clj-http
Move the clj-tuple exclusion to clj-http

clj-http is a dev dependency, so its transitives aren't available at
uberjar time, so we let durable-queue bring in clj-tuple instead.

technomancy/clojars-web,ato/clojars-web,clojars/clojars-web,nberger/clojars-web,technomancy/clojars-web,tobias/clojars-web,tobias/clojars-web,clojars/clojars-web,tobias/clojars-web,nberger/clojars-web,ato/clojars-web,clojars/clojars-web