upgraded dependencies, hopefully support for python 3.12 through new pendulum

Author: rlittlefield

.github/workflows/main.yml

@@ -19,8 +19,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.7, 3.8, 3.9, "3.10"]
-        poetry-version: [1.1.11]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
+        poetry-version: ["1.8.3"]
         os: [ubuntu-18.04, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps: