chore(ci): test on Python 3.12

Update pipenv to the same version as GGShield to fix that error:

```
Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.12.1/x64/bin/pipenv", line 5, in <module>
    from pipenv import cli
  File "/opt/hostedtoolcache/Python/3.12.1/x64/lib/python3.12/site-packages/pipenv/__init__.py", line 58, in <module>
    from .cli import cli
  File "/opt/hostedtoolcache/Python/3.12.1/x64/lib/python3.12/site-packages/pipenv/cli/__init__.py", line 1, in <module>
    from .command import cli  # noqa
    ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.12.1/x64/lib/python3.12/site-packages/pipenv/cli/command.py", line 7, in <module>
    from pipenv.cli.options import (
  File "/opt/hostedtoolcache/Python/3.12.1/x64/lib/python3.12/site-packages/pipenv/cli/options.py", line 3, in <module>
    from pipenv.project import Project
  File "/opt/hostedtoolcache/Python/3.12.1/x64/lib/python3.12/site-packages/pipenv/project.py", line 20, in <module>
    from pipenv.environment import Environment
  File "/opt/hostedtoolcache/Python/3.12.1/x64/lib/python3.12/site-packages/pipenv/environment.py", line 19, in <module>
    from pipenv.patched.pip._vendor import pkg_resources
  File "/opt/hostedtoolcache/Python/3.12.1/x64/lib/python3.12/site-packages/pipenv/patched/pip/_vendor/pkg_resources/__init__.py", line 2164, in <module>
    register_finder(pkgutil.ImpImporter, find_on_path)
                    ^^^^^^^^^^^^^^^^^^^
AttributeError: module 'pkgutil' has no attribute 'ImpImporter'. Did you mean: 'zipimporter'?
```

Author: agateau-gg

.github/workflows/test-lint.yml

@@ -27,7 +27,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          python -m pip install --upgrade pipenv==2022.10.4 pre-commit
+          python -m pip install --upgrade pipenv==2023.10.3 pre-commit
           pipenv install --dev --skip-lock
 
       - uses: actions/cache@v3
@@ -59,7 +59,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
     steps:
       - uses: actions/checkout@v4
 
@@ -71,7 +71,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          python -m pip install --upgrade pipenv==2022.10.4
+          python -m pip install --upgrade pipenv==2023.10.3
           pipenv install --system --dev --skip-lock
 
       - name: Test with pytest