ci: fix nightly version bump

Author: pi0

.github/workflows/ci.yml

@@ -31,5 +31,5 @@ jobs:
       - uses: actions/setup-node@v5
         with: { node-version: lts/*, cache: "pnpm" }
       - run: pnpm install
-      - run: pnpm changelogen --bump --canary nightly
+      - run: pnpm changelogen --bump -r 2.0.0 --canary nightly
       - run: npm i -g npm@latest && npm publish --tag latest