Bump dependabot-omnibus from `e7ceff1` to `764c29e`

Bumps dependabot-omnibus from e7ceff1 to 764c29e.

Commits

• 764c29e Merge remote-tracking branch 'upstream/main' into arm-images
• 570898a Fix parsing some YAMLs due to outdated libyaml (#7112)
• 6aaaf43 Use ltrim() rather than preg_replace() (#7130)
• 60033d6 Map updater ecosystem to bundler (#6570)
• 5b75a33 Merge pull request #7129 from dependabot/v0.216.2-release-notes
• 3403ec3 v0.216.2
• 5b34a58 Merge pull request #7115 from dependabot/brrygrdn/pr-message-builder-is-group...
• 12d8bda Add a dependency group PR naming strategy
• 8424a28 Slim down the pr_name method
• 47f985f The PullRequestCreator forwards the dependency_group
• Additional commits viewable in compare view

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