Merging a53b8d0 into v1

Conductor for this PR is @cklin

Contains the following pull requests:

• upload-sarif: Link to docs on upload limits #777 - upload-sarif: Link to docs on upload limits (@adityasharad)
• Mergeback v1.0.20 refs/heads/v1 into main #793 - Mergeback v1.0.20 refs/heads/v1 into main (@edoardopirovano)
• Further fix to update dependencies workflow #794 - Further fix to update dependencies workflow (@edoardopirovano)
• Update CodeQL bundle to 20211025 / 2.7.0 #795 - Update CodeQL bundle to 20211025 / 2.7.0 (@cklin)

Please review the following:

• The CHANGELOG displays the correct version and date.
• The CHANGELOG includes all relevant, user-facing changes since the last release.
• There are no unexpected commits being merged into the v1 branch.
• The docs team is aware of any documentation changes that need to be released.
• The mergeback PR is merged back into main after this PR is merged.