Merge pull request #49 from ruby-grape/dependabot/bundler/ffi-1.12.2

Bump ffi from 1.9.18 to 1.12.2

Author: dblock

Gemfile.lock

@@ -18,7 +18,7 @@ GEM
     execjs (2.7.0)
     faraday (0.12.1)
       multipart-post (>= 1.2, < 3)
-    ffi (1.9.18)
+    ffi (1.12.2)
     forwardable-extended (2.6.0)
     gemoji (3.0.0)
     github-pages (139)