Feature #2471 v12.0.0_beta2

[JohnHalleyGotway]

Expected Differences

Adds MET-12.0.0-beta2 release notes.
Fixes Wavelet-Stat '2^n x 2^n' equations.

• Do these changes introduce new tools, command line arguments, or configuration file options? [No]
  
  If yes, please describe:
  

• Do these changes modify the structure of existing or add new output data types (e.g. statistic line types or NetCDF variables)? [No]
  
  If yes, please describe:
  

Pull Request Testing

• Describe testing already performed for these changes:
  
  Built locally to confirm Wavelet-Stat fix.
  From:
  
  To:
  

• Recommend testing for the reviewer(s) to perform, including the location of input datasets, and any additional instructions:
  
  Please review these proposed MET-12.0.0-beta2 release notes on RTD and updated Wavelet-Stat equations.

• Do these changes include sufficient documentation updates, ensuring that no errors or warnings exist in the build of the documentation? [Yes]
  Just release notes.

• Do these changes include sufficient testing updates? [Yes]
  No new tests needed.

• Will this PR result in changes to the test suite? [No]
  
  If yes, describe the new output and/or changes to the existing output:
  
  Note that differences WILL be flagged by the GHA run, but these originate from recently committed PR's. We need to update the develop-ref branch to get past those diffs.

• Please complete this pull request review by [Fri 11/17/23].
  

Pull Request Checklist

See the METplus Workflow for details.

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• Complete the PR definition above.
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  Select: Reviewer(s) and Development issue
  Select: Milestone as the version that will include these changes
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[j-opatz]

beta2 release notes were reviewed and no cause for changes were found. Equation in WaveletStat documentation now appears as expected. The PR is approved for merging.