🤠 fix the author field in the cabal file.

https://github.com/github/semantic/graphs/contributors seemed too lengthy to fit in there and we didn’t want to leave people out, so we went with “The Semantic authors” to cover everybody.

Author: robrix

semantic.cabal

@@ -4,7 +4,7 @@ version:             0.6.0
 synopsis:            Framework and service for analyzing and diffing untrusted code.
 description:         Please see README.md
 homepage:            http://github.com/github/semantic#readme
-author:              Rob Rix, Josh Vera
+author:              The Semantic authors
 maintainer:          [email protected]
 license:             MIT
 license-file:        LICENSE