Use uv run --no-sync in GitHub Actions

Add --no-sync flag to uv run commands to prevent reinstalling
editable workspace packages after installing built wheel artifacts.

This ensures tests run against the actual built distributions
rather than the editable workspace versions.

Updated:
- python-tests.yml: uv run --no-sync pytest
- api-check.yml: uv run --no-sync python

Author: RonnyPfannschmidt

.github/workflows/api-check.yml

@@ -46,4 +46,4 @@ jobs:
         run: |
           echo "Comparing current code against tag: ${{ steps.latest-tag.outputs.tag }}"
           # Use local check_api.py script which includes griffe-public-wildcard-imports extension
-          uv run python setuptools-scm/check_api.py --against ${{ steps.latest-tag.outputs.tag }}
+          uv run --no-sync python setuptools-scm/check_api.py --against ${{ steps.latest-tag.outputs.tag }}

.github/workflows/python-tests.yml

@@ -132,7 +132,7 @@ jobs:
       # this hopefully helps with os caches, hg init sometimes gets 20s timeouts
       - run: hg version
       - name: Run tests for both packages
-        run: uv run pytest setuptools-scm/testing_scm/ vcs-versioning/testing_vcs/
+        run: uv run --no-sync pytest setuptools-scm/testing_scm/ vcs-versioning/testing_vcs/
         timeout-minutes: 25
 
   dist_upload: