Bump the pypi-updates group with 7 updates

Bumps the pypi-updates group with 7 updates:

| Package | From | To |
| --- | --- | --- |
| [google-auth](https://github.com/googleapis/google-cloud-python) | `2.55.1` | `2.56.2` |
| [icalendar](https://github.com/collective/icalendar) | `7.2.0` | `7.2.2` |
| [pytz](https://github.com/stub42/pytz) | `2026.2` | `2026.3.post1` |
| [mypy](https://github.com/python/mypy) | `2.1.0` | `2.3.0` |
| [types-python-dateutil](https://github.com/python/typeshed) | `2.9.0.20260518` | `2.9.0.20260716` |
| [types-pytz](https://github.com/python/typeshed) | `2026.2.0.20260518` | `2026.3.1.20260727` |
| [types-pyyaml](https://github.com/python/typeshed) | `6.0.12.20260518` | `6.0.12.20260724` |


Updates `google-auth` from 2.55.1 to 2.56.2
- [Release notes](https://github.com/googleapis/google-cloud-python/releases)
- [Changelog](https://github.com/googleapis/google-cloud-python/blob/main/packages/google-cloud-documentai/CHANGELOG.md)
- [Commits](https://github.com/googleapis/google-cloud-python/compare/google-auth-v2.55.1...google-auth-v2.56.2)

Updates `icalendar` from 7.2.0 to 7.2.2
- [Release notes](https://github.com/collective/icalendar/releases)
- [Changelog](https://github.com/collective/icalendar/blob/main/CHANGES.rst)
- [Commits](https://github.com/collective/icalendar/compare/v7.2.0...v7.2.2)

Updates `pytz` from 2026.2 to 2026.3.post1
- [Release notes](https://github.com/stub42/pytz/releases)
- [Commits](https://github.com/stub42/pytz/compare/release_2026.2...release_2026.3.post1)

Updates `mypy` from 2.1.0 to 2.3.0
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](https://github.com/python/mypy/compare/v2.1.0...v2.3.0)

Updates `types-python-dateutil` from 2.9.0.20260518 to 2.9.0.20260716
- [Commits](https://github.com/python/typeshed/commits)

Updates `types-pytz` from 2026.2.0.20260518 to 2026.3.1.20260727
- [Commits](https://github.com/python/typeshed/commits)

Updates `types-pyyaml` from 6.0.12.20260518 to 6.0.12.20260724
- [Commits](https://github.com/python/typeshed/commits)

---
updated-dependencies:
- dependency-name: google-auth
  dependency-version: 2.56.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: pypi-updates
- dependency-name: icalendar
  dependency-version: 7.2.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: pypi-updates
- dependency-name: pytz
  dependency-version: 2026.3.post1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: pypi-updates
- dependency-name: mypy
  dependency-version: 2.3.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: pypi-updates
- dependency-name: types-python-dateutil
  dependency-version: 2.9.0.20260716
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: pypi-updates
- dependency-name: types-pytz
  dependency-version: 2026.3.1.20260727
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: pypi-updates
- dependency-name: types-pyyaml
  dependency-version: 6.0.12.20260724
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: pypi-updates
...

Signed-off-by: dependabot[bot] <support@github.com>

pyproject.toml

@@ -19,10 +19,10 @@ classifiers = [
 
 [tool.poetry.dependencies]
 python = "^3.11"
-google-auth = "2.55.1"
+google-auth = "2.56.2"
 google-api-python-client = "2.198.0"
-icalendar = "7.2.0"
-pytz = "2026.2"
+icalendar = "7.2.2"
+pytz = "2026.3.post1"
 PyYAML = "6.0.3"
 fire = "0.7.1"