Merge pull request #20 from dbalatero/dependabot/bundler/ffi-1.12.2

Bump ffi from 1.9.21 to 1.12.2

Author: dbalatero

Gemfile.lock

@@ -22,7 +22,7 @@ GEM
     coderay (1.1.2)
     colorize (0.8.1)
     diff-lcs (1.3)
-    ffi (1.9.21)
+    ffi (1.12.2)
     gem-release (2.0.1)
     method_source (0.9.0)
     mini_mime (1.0.0)