Update to latest metrics_index list on main

[github-actions[bot]]

This (automated) patch updates the list from metrics_index.py.

For reviewers:

• Canonical source for the index: https://raw.githubusercontent.com/mozilla/gecko-dev/master/toolkit/components/glean/metrics_index.py
• Please double-check that the changes here are valid and that the referenced files exist.
  • If the referenced files do not exist, schema deploys will fail
• Please double-check that none of the files are deleted from the list.
  • Deleted files result in incompatible schema changes that might not be immediately caught.
• Delete this branch after merging or closing the PR.

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The source code of this automation bot lives in https://github.com/mozilla/probe-scraper/tree/main/fog-updater.