Use personal access token for Homebrew tap updates

Update GoReleaser and workflow to use HOMEBREW_TAP_GITHUB_TOKEN for pushing to the homebrew-stacktodate repository. This resolves 403 permission errors when publishing Homebrew formulas.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

Author: ceritium

.github/workflows/release.yml

@@ -34,3 +34,4 @@ jobs:
           args: release --clean
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          HOMEBREW_TAP_GITHUB_TOKEN: ${{ secrets.HOMEBREW_GORELEASER_TOKEN }}

.goreleaser.yml

@@ -54,7 +54,7 @@ brews:
     repository:
       owner: stacktodate
       name: homebrew-stacktodate
-      token: "{{ .Env.GITHUB_TOKEN }}"
+      token: "{{ .Env.HOMEBREW_TAP_GITHUB_TOKEN }}"
     homepage: "https://stacktodate.club"
     description: "CLI tool for Stack To Date - track your tech stack lifecycle"
     license: MIT