ci: use latest Bun version

Author: metonym

.github/workflows/ci.yml

@@ -9,6 +9,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: oven-sh/setup-bun@v1
+        with:
+          bun-version: latest
 
       - name: Build and test the library
         run: |