Update metadata to use PEP 621 (#654)

* Drop python version 3.8 support
* Add python 3.13 support in CI

.github/workflows/release.yml

@@ -16,10 +16,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - name: Set up Python 3.8
+      - name: Set up Python 3.9
         uses: actions/setup-python@v4
         with:
-          python-version: 3.8
+          python-version: 3.9
       - name: Install poetry
         run: python -m pip install poetry
       - name: Build package