Revert "(maint) Exclude breaking rubocop versions"

[gavindidrichsen]

Reverts #565

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 64.03%. Comparing base (a16cc96) to head (d1f606e).

Files	Patch %	Lines
lib/puppet_litmus/rake_helper.rb	50.00%	2 Missing ⚠️
lib/puppet_litmus/inventory_manipulation.rb	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #570      +/-   ##
==========================================
+ Coverage   63.95%   64.03%   +0.07%     
==========================================
  Files           6        6              
  Lines         763      759       -4     
==========================================
- Hits          488      486       -2     
+ Misses        275      273       -2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[gavindidrichsen]

As I didn't add any functionality here but only correct syntax on existing code, I'm recommending we