fix(release): use git diff --cached in version bump step

.changeset/fix-release-version-commit.md

@@ -0,0 +1,5 @@
+---
+"@deessejs/errors": patch
+---
+
+Fix a bug in the release workflow: `git diff --quiet` (without `--cached`) compared the working tree to the index, which is in sync immediately after `git add -A`. This caused the version bump commit to be skipped, leaving the working tree in a `pnpm changeset publish`-able state but never pushed to `main`. Use `git diff --cached --quiet` so the comparison is against the last commit (HEAD), which is what we actually want.

.github/workflows/release.yml

@@ -71,7 +71,10 @@ jobs:
           git config user.name "github-actions[bot]"
           git config user.email "github-actions[bot]@users.noreply.github.com"
           git add -A
-          git diff --quiet || git commit -m "chore(release): version packages"
+          # Use --cached: after `git add -A`, the diff against the index is empty.
+          # `git diff --quiet` (without --cached) compares the working tree to the
+          # index, which is already in sync, so the commit was never created.
+          git diff --cached --quiet || git commit -m "chore(release): version packages"
           git push origin HEAD
           git push --tags