Fix task `Pester_If_Code_Coverage_Under_Threshold`

[johlju]

Pull Request

Pull Request (PR) description

Fixed

• Now the task Pester_If_Code_Coverage_Under_Threshold correctly honors the zero value (0) of the parameter CodeCoverageThreshold when using build.ps1, and honors the zero value (0) of the Pester advanced build configuration key CoveragePercentTarget. If the value is set to 0 the task will now be skipped since code coverage was disabled.

Task list

• [x] The PR represents a single logical change. i.e. Cosmetic updates should go in different PRs.
• [x] Added an entry under the Unreleased section of in the CHANGELOG.md as per format.
• [x] Local clean build passes without issue or fail tests (build.ps1 -ResolveDependency).
• [ ] Resource documentation added/updated in README.md.
• [ ] Resource parameter descriptions added/updated in README.md, schema.mof and comment-based help.
• [ ] Comment-based help added/updated.
• [ ] Localization strings added/updated in all localization files as appropriate.
• [ ] Examples appropriately added/updated.
• [ ] Unit tests added/updated. See DSC Resource Testing Guidelines.
• [ ] Integration tests added/updated (where possible). See DSC Resource Testing Guidelines.
• [x] New/changed code adheres to DSC Resource Style Guidelines and Best Practices.

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This change is 

[codecov[bot]]

Codecov Report

Merging #293 (299ac90) into main (05d476c) will decrease coverage by 0%. The diff coverage is 0%.

@@         Coverage Diff         @@
##           main   #293   +/-   ##
===================================
- Coverage    28%    28%   -1%     
===================================
  Files        38     38           
  Lines      1917   1919    +2     
===================================
  Hits        555    555           
- Misses     1362   1364    +2     

Impacted Files	Coverage Δ
.build/tasks/Invoke-Pester.pester.build.ps1	0% <0%> (ø)