Fixed issues when trying to configure the file paths to match with toml.

[mariusvniekerk]

Since Path.glob eventually interns the strings and file_glob here could be a <tomlkit.items.String> instead of <str> we need to just ensure that we pass a plain vanilla string to glob.

[mtkennerly]

Thanks! I'm curious, how would you reproduce the issue that this was causing? I would be interested in adding a test for it, but I'm not clear on that part.

[mariusvniekerk]

Basically I set this

[tool.poetry-dynamic-versioning.substitution]
files = ['*.py', '*/__init__.py', '*/__version__.py', '*/_version.py', '*/meta.yaml']
patterns = [
    "(^__version__\\s*=\\s*['\"])[^'\"]*(['\"])",
    '(^.*version:\s*:)^$.(.*)'
]

in my pyproject.toml