PfxImport: Add empty string password to .Import method

[cmielke]

Pull Request (PR) description

Add an empty string to the X509Certificate2.Import to prevent the MethodCountCouldNotFindBest exception when using a null password to import the PFX certificate.

This Pull Request (PR) fixes the following issues

- Fixes #258 

Task list

• [x] Added an entry under the Unreleased section of the CHANGELOG.md. Entry should say what was changed, and how that affects users (if applicable).
• [ ] Resource documentation added/updated in the resource folder.
• [ ] Resource parameter descriptions added/updated in 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 #259 (48804b7) into main (8d5f01f) will not change coverage. The diff coverage is 0%.

@@         Coverage Diff         @@
##           main   #259   +/-   ##
===================================
  Coverage    84%    84%           
===================================
  Files         7      7           
  Lines       933    933           
===================================
  Hits        790    790           
  Misses      143    143           

Impacted Files	Coverage Δ
...s/CertificateDsc.Common/CertificateDsc.Common.psm1	81% <0%> (ø)

[bdrans]

Does anyone know what needs to be changed with the PR to get it merged? I'm running into this issue (#258) so it would be nice go get it merged

[PlagueHO]

Hi @cmielke - any chance you could rebase this against main? There have been a few fixes/changes to the pipeline. This should fix the build process so that all the tests pass. Thank you!

[cmielke]

I have rebased against main. Hopefully that will work.