[Exec] Improve performance when checking for a ruby shebang
[Exec] Improve performance when checking for a ruby shebang

bundler/bundler,mvz/bundler,seanlinsley/bundler,RochesterinNYC/bundler,seanlinsley/bundler,dilumnavanjana/bundler,asutoshpalai/bundler,bronzdoc/bundler,asutoshpalai/bundler,bundler/bundler,RochesterinNYC/bundler,dilumnavanjana/bundler,mvz/bundler,bronzdoc/bundler