Bump oven-sh/setup-bun from 1 to 2 (#1)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/docs.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: oven-sh/setup-bun@v1
+      - uses: oven-sh/setup-bun@v2
       - uses: actions/configure-pages@v4
       - run: bun install
       - run: bun run docs:build