Fix resolver CI job

Author: sandhose

.github/workflows/resolver.yml

@@ -47,6 +47,9 @@ jobs:
         with:
           python-version: "3.13"
 
+      - name: Install Python packaging tools
+        run: python -m pip install -U pip build
+
       - name: Setup uv
         uses: astral-sh/setup-uv@v6