Bump inspec-core-bin to 4.21.1
Bump inspec-core-bin to 4.21.1

This pull request was triggered automatically via Expeditor when inspec-core-bin 4.21.1 was promoted to Rubygems.

This change falls under the obvious fix policy so no Developer Certificate of Origin (DCO) sign-off is required.

tas50/chef-1,nvwls/chef,MsysTechnologiesllc/chef,higanworks/chef,chef/chef,mwrock/chef,higanworks/chef,MsysTechnologiesllc/chef,tas50/chef-1,higanworks/chef,tas50/chef-1,tas50/chef-1,gene1wood/chef,nvwls/chef,nvwls/chef,higanworks/chef,MsysTechnologiesllc/chef,gene1wood/chef,mattray/chef,gene1wood/chef,chef/chef,mattray/chef,mattray/chef,nvwls/chef,nvwls/chef,chef/chef,MsysTechnologiesllc/chef,mwrock/chef,mattray/chef,gene1wood/chef,mattray/chef,higanworks/chef,nvwls/chef,mwrock/chef,mwrock/chef,chef/chef