ci: replace pipx usage with uvx

Author: afuetterer

.github/workflows/test.yml

@@ -108,10 +108,9 @@ jobs:
       NO_COLOR: 1
     steps:
     - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-    - run: pipx install hatch
     - name: Get package version
       id: package-version
-      run: echo "version=$(hatch version)" >> $GITHUB_OUTPUT
+      run: echo "version=$(uvx hatch version)" >> $GITHUB_OUTPUT
     - uses: docker/setup-buildx-action@c47758b77c9736f4b2ef4073d4d51994fabfe349 # v3.7.1
     - name: Build and push
       uses: docker/build-push-action@48aba3b46d1b1fec4febb7c5d0c644b249a11355 # v6.10.0