chore(ci): test on python 3.13-beta.4

Signed-off-by: Yves Bastide <yves@botify.com>

Author: ybastide

.github/workflows/ci.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "pypy-3.9"]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13.0-beta.4", "pypy-3.9"]
 
     steps:
     - uses: actions/checkout@v3