fix(ci): prevent dirty git state in release workflow

[miguelsanchez-upsun]

Summary

Fixes the "git is in a dirty state" error that occurs when running the release workflow with upload_repos enabled.

The workflow was using sed to modify .goreleaser.yaml in-place when the upload_taps checkbox was enabled, causing GoReleaser to detect modified files and fail validation.

Solution: Replace file modification with environment variable approach:

• Use GoReleaser's envOrDefault template function to read SKIP_UPLOAD_TAPS from environment
• Set the environment variable in the workflow based on the upload_taps input
• Preserves identical GitHub UI behavior (same checkbox, same functionality)

Test plan

• Verify workflow runs successfully without upload_taps checkbox (should use auto)
• Verify workflow runs successfully with upload_taps checkbox enabled (should use false)
• Confirm no "dirty git state" error appears in GoReleaser output
• Validate that Homebrew/Scoop uploads work as expected when enabled

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR updates the release pipeline to avoid modifying tracked files during a run (which caused GoReleaser “dirty git state” validation failures) by switching tap upload control from an in-place sed edit to an environment-driven GoReleaser template.

Changes:

• Replace skip_upload: auto literals in .goreleaser.yaml with an envOrDefault template reading SKIP_UPLOAD_TAPS.
• Remove the workflow step that edited .goreleaser.yaml in-place with sed.
• Set SKIP_UPLOAD_TAPS in the release workflow based on the upload_taps input.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
.goreleaser.yaml	Makes tap/scoop skip_upload configurable via environment instead of a committed-file edit.
.github/workflows/release.yml	Eliminates in-workflow file mutation and sets SKIP_UPLOAD_TAPS for make release.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.