/update_factorio.py:196: SyntaxWarning: invalid escape sequence '\d'

[ttelford]

Python 3.12 updates a DeprecatedWarning that was added in 3.6 to a SyntaxWarning

./update_factorio.py -h
update_factorio.py:196: SyntaxWarning: invalid escape sequence '\d'
  source_version = re.search("Version: (\d+\.\d+\.\d+)", version_output)

Replacing the escapes in the regular expression search from \d → \\d (or \. → \\. fixes it.

See Pull Request #64