update develop-ref after dtcenter/MET#1674

[georgemccabe]

Changes in MET (dtcenter/MET#1674) caused the output filenames from a MODE use case to differ. The change is actually an improvement, as the MET tools now read the accumulation interval from cf-compliant files and use the value in the output filenames.

This PR is simply to trigger the develop-ref branch to regenerate the truth data. This could actually be accomplished by re-triggering the latest develop-ref GitHub Actions run since the code changes in METplus are not responsible for the change. Consider cancelling this PR in favor of doing that.

Pull Request Testing

• Describe testing already performed for these changes:
  
  See above

• Recommend testing for the reviewer(s) to perform, including the location of input datasets, and any additional instructions:
  
  See above

• Do these changes include sufficient documentation and testing updates? [Yes]

• Will this PR result in changes to the test suite? [No]
  
  Except for updating the truth data.

Pull Request Checklist

See the METplus Workflow for details.

• Complete the PR definition above.
• Ensure the PR title matches the feature or bugfix branch name.
• Define the PR metadata, as permissions allow.
  Select: Reviewer(s), Project(s), and Milestone
• After submitting the PR, select Linked Issues with the original issue number.
• After the PR is approved, merge your changes. If permissions do not allow this, request that the reviewer do the merge.
• Close the linked issue and delete your feature or bugfix branch from GitHub.