Run nox via uvx.

.github/workflows/CI.yml

@@ -21,12 +21,11 @@ jobs:
       - uses: actions/checkout@v4
         with:
           persist-credentials: false
-      - name: Set up nox
-        uses: wntrblm/nox@2024.10.09
+      - uses: astral-sh/setup-uv@v5
       - id: noxenvs-matrix
         run: |
           echo >>$GITHUB_OUTPUT noxenvs=$(
-            nox --list-sessions --json | jq '[.[].session]'
+            uvx nox --list-sessions --json | jq '[.[].session]'
           )
 
   test:
@@ -62,13 +61,9 @@ jobs:
             pypy3.10
           allow-prereleases: true
 
-      - name: Set up uv
-        uses: hynek/setup-cached-uv@v2
-      - name: Set up nox
-        uses: wntrblm/nox@2024.10.09
-
+      - uses: astral-sh/setup-uv@v5
       - name: Run nox
-        run: nox -s "${{ matrix.noxenv }}"
+        run: uvx nox -s "${{ matrix.noxenv }}" -- ${{ matrix.posargs }} # zizmor: ignore[template-injection]
 
   manylinux:
     needs: test