Resolve "ChatOps is not compatible with M1 CPUs"

Context:

I could not run the ChatOps project on my new M1 laptop. Every time that I executed a test, I received the following error message:

Failure/Error: require 'http'

TypeError:
  unable to resolve type 'size_t'
# ./lib/chatops.rb:4:in `require'
# ./lib/chatops.rb:4:in `<top (required)>'
# ./spec/spec_helper.rb:27:in `require'
# ./spec/spec_helper.rb:27:in `<top (required)>'
# ./spec/chatops/commands/batched_background_migrations_spec.rb:3:in `require'
# ./spec/chatops/commands/batched_background_migrations_spec.rb:3:in `<top (required)>'
No examples found.

After some investigation, I found that the current version of ffi is incompatible with M1 CPUs.

Solution:

Update ffi gem

Closes #128 (closed)