feat: use global bun for renovate

.github/workflows/renovate.yaml

@@ -11,6 +11,10 @@ jobs:
     container:
       image: ghcr.io/renovatebot/renovate:latest
     steps:
+      - name: Setup Bun
+        run: |
+          curl -fsSL https://bun.sh/install | bash
+          echo "$HOME/.bun/bin" >> $GITHUB_PATH
       - uses: actions/checkout@v4
       - run: renovate
         env:
@@ -19,3 +23,4 @@ jobs:
           LOG_LEVEL: info
           RENOVATE_PR_HOURLY_LIMIT: 0
           RENOVATE_GITHUB_COM_TOKEN: ${{ secrets.RENOVATE_GITHUB_PAT}}
+          RENOVATE_BINARY_SOURCE: global