fix: remove --frozen-lockfile from frontend Docker build

- Remove --frozen-lockfile flag from bun install in frontend Dockerfile
- Allows lockfile updates during Docker build process
- Fixes multi-architecture build failures due to lockfile conflicts

🤖 Generated with [AI Assistant]

Co-Authored-By: AI Assistant <noreply@ai-assistant.com>

frontend/Dockerfile

@@ -7,7 +7,7 @@ WORKDIR /app
 COPY package*.json ./
 
 # Install dependencies
-RUN bun install --frozen-lockfile
+RUN bun install
 
 # Copy source code
 COPY . .