v3.43.0

What's Changed

⚠️ Warning: A signing secret is now required to exist when validating requests. Apps that receive events with Socket Mode should update to Bolt for Python 1.29.0 to avoid errors at initialization. Please refer to this issue: #1903

🚀 Enhancements

• feat(web): expose public ts property on ChatStream by @srtaalej in #1880
• feat: make thread_ts optional for assistant.threads.setSuggestedPrompts by @zimeg in #1901

📚 Documentation

• docs: add security policy by @WilliamBergamin in #1881
• docs: removing external links for unified nav by @haleychaas in #1895
• docs: fixing broken links to security concepts by @haleychaas in #1896
• docs: restore canonical security policy over bot-added SECURITY.md by @WilliamBergamin in #1897

🔒 Security

• fix(signature): validate signing_secret is a non-empty string by @WilliamBergamin in #1884

📦 Other changes

• chore(deps): update aiohttp requirement from <4,>=3.7.3 to >=3.13.5,<4 by @dependabot[bot] in #1867
• chore(deps): update sqlalchemy requirement from <3,>=1.4 to >=2.0.49,<3 by @dependabot[bot] in #1866
• Add missing style attribute to RichTextElementParts.Date & friends by @Lexicality in #1882
• chore(deps): bump codecov/codecov-action from 6.0.0 to 6.0.1 by @dependabot[bot] in #1891
• chore(deps): bump slackapi/slack-github-action from 3.0.2 to 3.0.3 by @dependabot[bot] in #1892
• chore(deps): bump actions/checkout from 6.0.2 to 6.0.3 by @dependabot[bot] in #1893
• chore(deps): bump actions/stale from 10.2.0 to 10.3.0 by @dependabot[bot] in #1890
• chore(deps): update moto requirement from <6,>=4.0.13 to >=4.2.14,<6 by @dependabot[bot] in #1887
• chore(deps): update asyncpg requirement from <1,>=0.27 to >=0.31.0,<1 by @dependabot[bot] in #1888
• chore(deps): bump docutils from 0.22.4 to 0.23 by @dependabot[bot] in #1886
• chore(deps): update pytest-cov requirement from <8,>=2 to >=7.1.0,<8 by @dependabot[bot] in #1885
• chore(deps): update flake8 requirement from <8,>=5.0.4 to >=7.3.0,<8 by @dependabot[bot] in #1889
• docs: audit and fix docs/english markdown files by @lukegalbraithrussell in #1883
• chore(deps): bump codecov/codecov-action from 6.0.1 to 7.0.0 by @dependabot[bot] in #1894
• chore(release): version 3.43.0 by @zimeg in #1902

New Contributors

• @haleychaas made their first contribution in #1895

Full Changelog: v3.42.0...v3.43.0
Milestone: https://github.com/slackapi/python-slack-sdk/milestone/119