Update workflows

[ryanlua]

Description

Updates the workflows to be in sync with Purse

Related Issues

Changes Made

This pull request updates GitHub workflow and configuration files to streamline CI and release processes, simplify release input options, and update build and artifact handling. The most important changes are grouped below:

Workflow Triggers and CI Improvements

• The CI workflow trigger is simplified to respond only to pushes affecting .github/workflows/ci.yml and .luau files, making CI runs more targeted and efficient.

Release Workflow and Input Simplification

• The release workflow input options are reduced to only require a tag_name, removing draft, prerelease, and make_latest options for a cleaner release process.
• The release action now always creates releases as drafts by default, ensuring releases are not published prematurely.

Build and Artifact Changes

• The build step now creates output files named Purse.rbxm and Purse.rbxmx from package.project.json, replacing the previous Satchel outputs from default.project.json.
• Artifact upload is refined to upload all files in builds/* instead of the entire directory, improving artifact granularity.

Configuration Cleanup

• Unnecessary comments are removed from .github/dependabot.yml for a cleaner configuration file.

Checklist

• I have tested these changes thoroughly.
• I have reviewed my code for any potential errors or issues.
• I have followed the code style guidelines for this project.

Additional Notes