Update merge bot workflow for GitHub Actions integration

[ptr727]

Enhance the merge conditions to include updates for GitHub Actions while excluding major version NuGet updates to prevent potential breaking changes.

[Copilot]

Pull request overview

Updates the merge-bot workflow to refine Dependabot auto-merge behavior, aiming to allow GitHub Actions updates while preventing potentially breaking major NuGet upgrades.

Changes:

• Adjusted Dependabot merge condition to permit GitHub Actions updates even when they are semver-major.
• Added inline documentation clarifying the intended merge behavior for GitHub Actions vs NuGet.

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Updates the merge-bot workflow so it auto-merges GitHub Actions (and other ecosystems) updates while preventing auto-merge of major NuGet updates to reduce risk of breaking changes.

Changes:

• Add documentation explaining why major NuGet updates are excluded from auto-merge.
• Update the merge step condition to only block nuget + semver-major, allowing all other update types/ecosystems to proceed.

[Copilot]

Pull request overview

Updates the Dependabot auto-merge workflow to allow major updates for non-NuGet ecosystems (notably GitHub Actions), while continuing to block major version updates for NuGet to reduce breaking-change risk.

Changes:

• Adjusted merge condition to allow major updates when package-ecosystem is not nuget.
• Kept the existing restriction that NuGet major updates (version-update:semver-major) are not auto-merged.
• Added clarifying comments documenting the new merge rules.