fix(ci): use changesets-action fork to pass OIDC env vars to publish

The upstream changesets/action@v1.7.0 detects OIDC but doesn't pass
the env vars through to the publish subprocess. Switch to
GarthDB/changesets-action@v1.6.8 with oidcAuth: true which explicitly
forwards ACTIONS_ID_TOKEN_REQUEST_URL and ACTIONS_ID_TOKEN_REQUEST_TOKEN.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: GarthDB

.github/workflows/release.yml

@@ -33,9 +33,10 @@ jobs:
           auth-method: oidc
       - name: Publish
         id: changesets
-        uses: changesets/action@v1.7.0
+        uses: GarthDB/changesets-action@v1.6.8
         with:
           commit: 'chore: release'
           publish: pnpm release
+          oidcAuth: true
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}