PR checks for python 3.12 (#1449)

Author: jyejare

.github/workflows/pull_request.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.10', '3.11']
+        python-version: ['3.10', '3.11', '3.12']
     steps:
       - name: Checkout Airgun
         uses: actions/checkout@v4