fix: Update Makefile to use proper dependency sync for tests

- Use 'uv sync --extra dev' to install test dependencies instead of manual pip install
- Remove --no-sync flag to use the properly synced environment with all dependencies
- This fixes CI test failures due to missing docker module and other dependencies

Co-authored-by: Amp <amp@ampcode.com>
Amp-Thread-ID: https://ampcode.com/threads/T-f299797b-2a6a-4934-81b2-17bf534552a8

Author: haasonsaas

Makefile

@@ -40,8 +40,8 @@ audit:
 	./scripts/dependency_audit.sh
 
 coverage:
-	uv pip install pytest pytest-asyncio pytest-cov
-	uv run --no-sync python -m pytest --cov=src --cov-report=term-missing --cov-fail-under=66
+	uv sync --extra dev
+	uv run python -m pytest --cov=src --cov-report=term-missing --cov-fail-under=66
 
 scan-images:
 	@if [ "$(SBOM_OUTPUT)" = "1" ]; then mkdir -p $(SBOM_DIR); fi