Bump the regular-updates group across 1 directory with 5 updates (#13)

Bumps the regular-updates group with 5 updates in the / directory:

| Package | From | To |
| --- | --- | --- |
| [pytest](https://github.com/pytest-dev/pytest) | `9.0.1` | `9.0.2` |
| [python-dotenv](https://github.com/theskumar/python-dotenv) | `1.2.1` | `1.2.2` |
| [ruff](https://github.com/astral-sh/ruff) | `0.14.8` | `0.15.4` |
| [slack-sdk](https://github.com/slackapi/python-slack-sdk) | `3.39.0` | `3.40.1` |
| [ty](https://github.com/astral-sh/ty) | `0.0.1a31` | `0.0.20` |



Updates `pytest` from 9.0.1 to 9.0.2
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@9.0.1...9.0.2)

Updates `python-dotenv` from 1.2.1 to 1.2.2
- [Release notes](https://github.com/theskumar/python-dotenv/releases)
- [Changelog](https://github.com/theskumar/python-dotenv/blob/main/CHANGELOG.md)
- [Commits](theskumar/python-dotenv@v1.2.1...v1.2.2)

Updates `ruff` from 0.14.8 to 0.15.4
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.14.8...0.15.4)

Updates `slack-sdk` from 3.39.0 to 3.40.1
- [Release notes](https://github.com/slackapi/python-slack-sdk/releases)
- [Commits](slackapi/python-slack-sdk@v3.39.0...v3.40.1)

Updates `ty` from 0.0.1a31 to 0.0.20
- [Release notes](https://github.com/astral-sh/ty/releases)
- [Changelog](https://github.com/astral-sh/ty/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ty@0.0.1-alpha.31...0.0.20)

---
updated-dependencies:
- dependency-name: pytest
  dependency-version: 9.0.2
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: regular-updates
- dependency-name: python-dotenv
  dependency-version: 1.2.2
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: regular-updates
- dependency-name: ruff
  dependency-version: 0.15.4
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: regular-updates
- dependency-name: slack-sdk
  dependency-version: 3.40.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: regular-updates
- dependency-name: ty
  dependency-version: 0.0.20
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: regular-updates
...

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Author: dependabot[bot]