Change PSGallery rules to remove 2 rules

[edyoung]

PR Summary

The PowerShell Gallery currently uses the set of rules in this preset configuration to inform module authors of problems in their modules. The 2 rules in question (AvoidUsingConvertToSecureStringWithPlainText' and 'AvoidUsingUserNameAndPasswordParams' are problematic in that:

• they form a large fraction of all the violations we report
• empirically, module authors do not actually fix these. We have some modules where the same violation has been reported for 100's of revision without any change
• authors frequently have reasons why they cannot abide by the recommendation

This changelist acknowledges reality: since the violation reports are not of value to module authors, we'll drop these rules.

PR Checklist

Note: Tick the boxes below that apply to this pull request by putting an x between the square brackets. Please mark anything not applicable to this PR NA.

• PR has a meaningful title
  • Use the present tense and imperative mood when describing your changes
• Summarized changes
• User facing documentation needed
• Change is not breaking
• Make sure you've added a new test if existing tests do not effectively test the code changed
• This PR is ready to merge and is not work in progress
  • If the PR is work in progress, please add the prefix WIP: to the beginning of the title and remove the prefix when the PR is ready

[bergmeister]

Thanks for updating this file to keep it in sync. I don't think that the new rules in PSSA 1.17.1 would be useful to the PSGallery but just wanted to update you that there has been a new release, which includes a lot of misc. bug fixes and perf improvements