add approve-publish step

Author: swibi-ttd

.github/workflows/build-and-publish.yaml

@@ -42,9 +42,17 @@ jobs:
       run: |
         python -m unittest tests/*.py
 
+  approve-publish:
+    name: Approve publish
+    needs: unit-tests
+    runs-on: ubuntu-latest
+    environment: sdk-publish-approval
+    steps:
+      - run: echo "Publish approved"
+
   build-and-pubish:
     name: Build and publish Python packages to PyPi
-    needs: unit-tests
+    needs: approve-publish
     uses: IABTechLab/uid2-shared-actions/.github/workflows/shared-publish-to-pypi-versioned.yaml@v3
     with:
       release_type: ${{ inputs.release_type }}