Update dependency python-dotenv to v1.2.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
python-dotenv	==1.2.2 → ==1.2.3

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Release Notes

theskumar/python-dotenv (python-dotenv)

v1.2.3

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Fixed

• Strip a leading UTF-8 BOM from .env file contents so the first variable is no longer silently lost when the file is saved with BOM (e.g. by some JetBrains IDEs on Windows) by [@​h1whelan] in [#​640]
• set_key now escapes backslashes, so values containing them (Windows paths, regular expressions) survive a write/read round-trip. Quoted values ending in an escaped backslash are no longer mis-parsed as an escaped quote, which used to swallow the following lines by [@​dchaudhari7177] in [#​680]
• dotenv run now prints a friendly error instead of a traceback when no command is given by [@​bbc2] in [#​606]
• Cache the parsed result for empty .env files so repeated dotenv_values/load_dotenv calls no longer re-read the file by [@​ReinerBRO] in [#​638]

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