erlang-jiffy: Update to 1.1.1

upstream changes:
-----------------
Jiffy 1.1.1
  o Prevent rebar3 from seeing any global config  …
  o Fix builds using mix as a build tool  …
Jiffy 1.1.0
  o Replace build system with port_compiler  …
  o Use rebar3 for building and testing Jiffy directly
Jiffy 1.0.9
  o Fix typo in README
  o Update enc to exclude linking with erl_interface.lib on Windows  …

(triaxx)