Add Python 3.11 capability

[rickecon]

I don't remember where this breaks, but I remember it breaking when I tried it. I want FiscalSim to run on both Python 3.10 and Python 3.11 in the following two ways.

• (i) I want our fiscalsim-us-dev conda environment from environment.yml to work for Python 3.10 or 3.11. I want the following code change in environment.yml. setup.py already does this. Once the change is implemented, I want you to make sure that all the tests in make test run on your local machine in a fiscalsim-us-dev conda environment in which the Python version is 3.11.

name: fiscalsim-us-dev
dependencies:
  - python>=3.10,<3.12
  - pip

• (ii) I want our GH Actions CI tests in build_and_test.yml to run on all three operating systems (already does) and on Python 3.10 and 3.11 (currently only runs on Python 3.10). I want the build_and_test.yml code to be changed to the following, and must pass all the tests:

name: Build and test [Python 3.10, 311]
on: [push, pull_request]
jobs:
  build:
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
        python-version: ["3.10", "3.11"]

    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          persist-credentials: false
      - name: Set up Python using Python ${{ matrix.python-version }}
        uses: actions/setup-python@v4
        with:
          python-version: ${{ matrix.python-version }}
      - name: Install package
        run: make install
      - name: Run tests
        run: make test
      - name: Upload coverage to Codecov
        uses: codecov/codecov-action@v3
        with:
          files: ./coverage.xml
          flags: unittests
          name: codecov-umbrella
          fail_ci_if_error: true
          verbose: true

cc: @ss7886