Revert to latest Bun version after local upgrade

- Updated local Bun to v1.2.20 and confirmed build works
- Revert GitHub Actions to use latest Bun version
- Keep --frozen-lockfile flag for consistent builds

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: elasticdotventures

.github/workflows/build.yaml

@@ -14,7 +14,7 @@ jobs:
       - name: Setup Bun
         uses: oven-sh/setup-bun@v1
         with:
-            bun-version: 1.0.18 # Pin to working version
+            bun-version: latest
 
       - name: Install Dependencies
         run: bun install --frozen-lockfile