Update oven-sh/setup-bun action to v2

Author: renovate[bot]

.github/workflows/build.yml

@@ -13,7 +13,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Setup bun
-      uses: oven-sh/setup-bun@v1
+      uses: oven-sh/setup-bun@v2
       with:
         bun-version: latest
     - name: Install dependencies