ci: install the caching, extra_proxy and proxy-runtime extras in the GHA unit sync

.github/workflows/_test-unit-base.yml

@@ -136,7 +136,7 @@ jobs:
           LEGACY_MCP_PEER: ${{ inputs.legacy-mcp-peer }}
         run: |
           diff -u model_prices_and_context_window.json litellm/model_prices_and_context_window_backup.json
-          .github/scripts/uv_sync_with_retries.sh --frozen --group ci --group proxy-dev --extra google --extra proxy --extra semantic-router --extra saml
+          .github/scripts/uv_sync_with_retries.sh --frozen --group ci --group proxy-dev --extra google --extra proxy --extra semantic-router --extra saml --extra caching --extra extra_proxy --extra proxy-runtime
           uv run --no-sync python -c 'import os, sys; print(sys.version); assert f"{sys.version_info.major}.{sys.version_info.minor}" == os.environ["UV_PYTHON"]'
           if [ "$LEGACY_MCP_PEER" = "true" ]; then
             uv venv --python "${UV_PYTHON}" .venv-mcp-peer

.github/workflows/test-unit.yml

@@ -35,7 +35,6 @@ concurrency:
 # a matrix and carries a shard-coverage guard that reads that file by name.
 # Folding it in here is a follow-up, together with generalising that guard into
 # assert_ci_coverage.py.
-#
 jobs:
   unit:
     name: ${{ matrix.shard }}