Add github workflow to sync main into next

[gingerbenw]

Goal

This PR adds an automated GitHub workflow to keep the main and next branches in sync, ensuring that all changes pushed to main are automatically propagated to the next branch.

Replicates the smartbear-mcp sync workflow

[github-actions]

@bugsnag/browser bundle size diff

	Minified	Minfied + Gzipped
Before	47.11 kB	14.09 kB
After	47.11 kB	14.09 kB
±	No change	No change

code coverage diff

<temporarily disabled>

Generated by 🚫 dangerJS against 21b9d05

[Copilot]

Pull Request Overview

This PR adds an automated GitHub workflow to keep the main and next branches in sync by automatically creating pull requests when changes are pushed to main. The workflow includes conflict detection, issue creation for manual resolution, and auto-merge capabilities to streamline branch management.

• Implements automated sync from main to next branch via GitHub Actions
• Adds comprehensive conflict handling with fallback issue creation
• Includes a linting script for workflow validation

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
.github/workflows/sync-main-to-next.yml	Main workflow implementing automated branch sync with conflict detection and PR creation
scripts/lint-workflows.sh	Shell script for validating GitHub Actions workflows using actionlint

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[Copilot]

The team name 'bugsnag-dev' appears to be hardcoded and specific to another organization. This should be parameterized or updated to match the actual team structure of this repository.

[gingerbenw]

updated to platforms-javascript-developers and created a matching team under the platforms team

[twometresteve]

As discussed IRL, I think we should look at turning this into a common workflow that's maintained in a single location.