Bug: Upper case change doesn't work with None license

[RaczeQ]

Bug

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• I have filled out the system info
• I have described the bug, filled in the expected outcome and the actual
  outcome including screenshots where appropriate

System info

• OS: Ubuntu
• Browser:
• Version: 22.04.2

Describe the bug

Pre-commit update wanted to change LicenceCheck in my project from 2023.1.4 to 2023.3.
I have seen that a new uppercase string has been implemented. Additionally, the ModuleNotFound error has been raised, but I'm not sure if it's related.

Here is the log from the execution in the pre-commit hook (Python 3.11).
Execution: https://github.com/srai-lab/srai/actions/runs/5721376383/job/15502877608?pr=269

 During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/runner/.cache/pre-commit/repovx3e8lm_/py_env-python3.11/lib/python3.11/site-packages/licensecheck/packageinfo.py", line 25, in getPackageInfoLocal
    pkgMetadata = metadata.metadata(requirement)
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.4/x64/lib/python3.11/importlib/metadata/__init__.py", line 998, in metadata
    return Distribution.from_name(distribution_name).metadata
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.4/x64/lib/python3.11/importlib/metadata/__init__.py", line 565, in from_name
    raise PackageNotFoundError(name)
importlib.metadata.PackageNotFoundError: No package metadata was found for mkdocs-jupyter

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/runner/.cache/pre-commit/repovx3e8lm_/py_env-python3.11/lib/python3.11/site-packages/licensecheck/packageinfo.py", line 109, in getPackages
    packageinfo.add(getPackageInfoLocal(requirement))
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/runner/.cache/pre-commit/repovx3e8lm_/py_env-python3.11/lib/python3.11/site-packages/licensecheck/packageinfo.py", line 49, in getPackageInfoLocal
    raise ModuleNotFoundError from error
ModuleNotFoundError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/runner/.cache/pre-commit/repovx3e8lm_/py_env-python3.11/bin/licensecheck", line 8, in <module>
    sys.exit(cli())
             ^^^^^
  File "/home/runner/.cache/pre-commit/repovx3e8lm_/py_env-python3.11/lib/python3.11/site-packages/licensecheck/__init__.py", line 91, in cli
    myLice, depsWithLicenses = get_deps.getDepsWithLicenses(
                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/runner/.cache/pre-commit/repovx3e8lm_/py_env-python3.11/lib/python3.11/site-packages/licensecheck/get_deps.py", line 161, in getDepsWithLicenses
    packages = packageinfo.getPackages(reqs)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/runner/.cache/pre-commit/repovx3e8lm_/py_env-python3.11/lib/python3.11/site-packages/licensecheck/packageinfo.py", line 112, in getPackages
    packageinfo.add(getPackageInfoPypi(requirement))
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/runner/.cache/pre-commit/repovx3e8lm_/py_env-python3.11/lib/python3.11/site-packages/licensecheck/packageinfo.py", line 71, in getPackageInfoPypi
    license=ucstr(licenseClassifier if licenseClassifier != UNKNOWN else info["license"]),
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/runner/.cache/pre-commit/repovx3e8lm_/py_env-python3.11/lib/python3.11/site-packages/licensecheck/types.py", line 20, in __new__
    return super().__new__(cls, v.upper())
                                ^^^^^^^
AttributeError: 'NoneType' object has no attribute 'upper'

Expected outcome

Have a failure path for None licenses, maybe change the constructor for ucstr.

Actual outcome

__init__ function for ucstr fails with the None object.

[FredHappyface]

Should be fixed in 2023.4.1 :)