ci: Update pypi.yml (#154)

Author: avinash2692

.github/workflows/pypi.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.10','3.11','3.12']
+        python-version: ['3.12']
     environment:
       name: pypi
       url: https://pypi.org/project/mellea/
@@ -35,4 +35,4 @@ jobs:
       - name: Publish distribution 📦 to PyPI
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
-          attestations: true
+          attestations: true