Point multiformats back to origin (#729)

Since greglook/clj-multiformats#7 has been merged.

Author: borkdude

bb.edn

@@ -2,8 +2,8 @@
  :paths ["bb"]
  :deps {io.github.nextjournal/dejavu {:git/sha "4980e0cc18c9b09fb220874ace94ba6b57a749ca"}
         io.github.nextjournal/cas-client {:git/sha "d9f838937ebc8b645fe5764949e72a6df8e344de"}
-        mvxcvi/multiformats {:git/url "https://github.com/borkdude/greglook-clj-multiformats"
-                             :git/sha "e5b6980cf2850f1070a2c28a9893ecb2a060c267"}}
+        mvxcvi/multiformats {:git/url "https://github.com/greglook/clj-multiformats"
+                             :git/sha "1189f1fb26db180cd8dcfd50518cdf553c0ff9e1"}}
  :tasks
  {:requires
   ([tasks :as t]