More workflow updates

Signed-off-by: Ole Herman Schumacher Elgesem <ole.elgesem@northern.tech>

Author: olehermanse

.github/workflows/pypi-publish.yml

@@ -24,5 +24,6 @@ jobs:
       - name: Build and publish
         run: |
           git fetch --all --tags
-          uv build
+          uv lock --check
+          uv build --locked
           uv publish

.github/workflows/tests.yml

@@ -40,8 +40,9 @@ jobs:
           pytest
       - name: Install
         run: |
-          python setup.py sdist bdist_wheel
-          pip install dist/cfengine*.whl
+          uv lock --check
+          uv build --locked
+          uv pip install .
       - name: Sanity check
         run: cf-remote -V
       - name: Run docker tests