Release v0.5.0, WAF upgrade to 1.6.0 and ruleset to 1.4.2

[Anilm3]

Description

Small update to release v0.5.0.

Motivation

Additional Notes

Describe how to test your changes

Readiness checklist

• Unit tests have been updated and pass
• If known, an appropriate milestone has been selected
• All new source files include the required notice

Release checklist

• The CHANGELOG.md has been updated

[codecov-commenter]

Codecov Report

Merging #175 (76010c3) into master (055416e) will decrease coverage by 0.06%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #175      +/-   ##
==========================================
- Coverage   63.48%   63.41%   -0.07%     
==========================================
  Files          64       64              
  Lines        4387     4387              
  Branches     1319     1319              
==========================================
- Hits         2785     2782       -3     
- Misses        822      825       +3     
  Partials      780      780              

Flag	Coverage Δ
extension	69.16% <ø> (-0.11%)	⬇️
helper	53.22% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/extension/helper_process.c	57.77% <0.00%> (-0.67%)	⬇️

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