build(deps): bump python-dotenv from 1.2.2 to 1.2.3 in /claude-agent-sdk

[dependabot]

Bumps python-dotenv from 1.2.2 to 1.2.3.

Release notes

Sourced from python-dotenv's releases.

v1.2.3

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

Changelog

Sourced from python-dotenv's changelog.

[1.2.3] - 2026-08-16

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

Commits

• 49515af Bump version: 1.2.2 → 1.2.3
• 8ac846f chore: add release runbook (RELEASING.md) and make release target
• bb31c94 docs: add 1.2.3 release notes (#606, #638, #680)
• f7b18d9 fix: round-trip backslashes through set_key (#680)
• 751f8c1 ci(deps): bump actions/checkout from 6.0.2 to 6.0.3 in the github-actions gro...
• f1937b6 chore(deps): update mkdocs-include-markdown-plugin requirement from >=6.0.0 t...
• 45b9372 chore(deps): update pytest requirement from >=3.9 to >=9.0.3 (#653)
• 72896e9 docs: fix broken mkdocs link in CONTRIBUTING.md (#636)
• 72754a1 ci(deps): bump peaceiris/actions-gh-pages from 4.0.0 to 4.1.0 in the github-a...
• 078325e ci(security): harden CI/CD supply chain with SHA pinning and least-privilege ...
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