ci: install uv from action

Author: Jeff Gordon

.github/workflows/validate.yml

@@ -60,8 +60,11 @@ jobs:
       - name: Install setuptools
         run: python -m pip install --force setuptools wheel
 
-      - name: Install pipenv / poetry / uv
-        run: python -m pip install pipenv poetry uv
+      - name: Install pipenv / poetry
+        run: python -m pip install pipenv poetry
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v3
 
       - name: Install dependencies
         if: steps.cacheNpm.outputs.cache-hit != 'true'