fix versioning job

.github/workflows/buildutils.yml

@@ -37,12 +37,7 @@ jobs:
 
     - name: Reset version
       run: |
-        # TODO: improve this with a mock package?
-        # This step is to ensure the workflow always starts with a final version
-        sed -i -E 's/= VersionInfo\(.*\)/= VersionInfo\(9, 8, 7, "final", 0\)/' notebook/_version.py
-        cat notebook/_version.py
-        sed -i -E 's/current_version = .*/current_version = 9, 8, 7, "final", 0/' .bumpversion.cfg
-        cat .bumpversion.cfg
+        hatch version 9.8.7
         jlpm run lerna version 9.8.7 --no-push --force-publish --no-git-tag-version --yes
         git commit -am "Release 9.8.7"