Docs: adds brew instructions to release checklist

[cesar-rodriguez]

Adding instructions to create homebrew PR as part of the release process.

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[codecov]

Codecov Report

Merging #987 (07db4e0) into master (ced64a2) will increase coverage by 0.06%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #987      +/-   ##
==========================================
+ Coverage   78.71%   78.77%   +0.06%     
==========================================
  Files         223      224       +1     
  Lines        5552     5729     +177     
==========================================
+ Hits         4370     4513     +143     
- Misses        909      936      +27     
- Partials      273      280       +7     

Impacted Files	Coverage Δ
pkg/iac-providers/kubernetes/v1/load-dir.go	72.22% <0.00%> (-0.51%)	⬇️
pkg/iac-providers/output/types.go	100.00% <0.00%> (ø)
pkg/iac-providers/kubernetes/v1/extract-images.go	68.88% <0.00%> (ø)
pkg/iac-providers/kubernetes/v1/normalize.go	91.50% <0.00%> (+2.93%)	⬆️
pkg/iac-providers/kubernetes/v1/load-file.go	79.59% <0.00%> (+7.71%)	⬆️