PR Summary

Backport #28323 to release/v7.6.10.

• Install Az.Storage 9.7.2 from the internal PowerShellGalleryMirror feed in all three storage-publication jobs.
• Explicitly import the exact module version before invoking storage commands.

PR Context

The release publishing jobs depended on Az.Storage being present in the hosted image. This change removes that floating image dependency so New-AzStorageContext and the other storage commands remain available to the PowerShell 7.6.10 publishing stages.

Validation:

• python -c "import yaml,pathlib; files=[pathlib.Path(r'.pipelines\templates\release-MakeBlobPublic.yml'),pathlib.Path(r'.pipelines\templates\release-upload-buildinfo.yml')]; [yaml.safe_load(p.read_text(encoding='utf-8')) for p in files]; print('Parsed YAML:', ', '.join(str(p) for p in files))" — Passed; both changed templates parsed successfully.
• git diff origin/release/v7.6.10...HEAD --check — Passed.

PR Checklist

• PR has a meaningful title
  • Use the present tense and imperative mood when describing your changes
• Summarized changes
• Make sure all .h, .cpp, .cs, .ps1 and .psm1 files have the correct copyright header
• This PR is ready to merge. If this PR is a work in progress, please open this as a Draft Pull Request and mark it as Ready for Review when it is ready to merge.
• Breaking changes
  • None
  • OR
  • Experimental feature(s) needed
    • Experimental feature name(s):
• User-facing changes
  • Not Applicable
  • OR
  • Documentation needed
    • Issue filed:
• Testing - New and feature
  • N/A or can only be tested interactively
  • OR
  • Make sure you've added a new test if existing tests do not effectively test the code changed