CI: Run ruff via uv, dev-dependencies

Author: inducer

.github/workflows/ci.yml

@@ -19,10 +19,10 @@ jobs:
         -   uses: actions/checkout@v4
             with:
                 submodules: true
+        -   uses: astral-sh/setup-uv@v5
         -   name: "Main Script"
             run: |
-                pipx install ruff
-                ruff check
+                uv run --only-dev ruff check
 
     typos:
         name: Typos

.gitlab-ci.yml

@@ -149,8 +149,8 @@ Documentation:
 
 Ruff:
   script:
-  - pipx install ruff
-  - ruff check
+  - pipx install uv
+  - uv run --only-dev ruff check
   tags:
   - docker-runner
   except: