chore(deps): update dependency antsibull-docs to >=2.17,<2.18 (#644)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
|
[antsibull-docs](https://redirect.github.com/ansible-community/antsibull-docs)
([changelog](https://redirect.github.com/ansible-community/antsibull-docs/tree/main/CHANGELOG.md))
| `>=2.16,<2.17` -> `>=2.17,<2.18` |
[![age](https://developer.mend.io/api/mc/badges/age/pypi/antsibull-docs/2.17.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/pypi/antsibull-docs/2.17.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/pypi/antsibull-docs/2.16.3/2.17.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/antsibull-docs/2.16.3/2.17.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>ansible-community/antsibull-docs (antsibull-docs)</summary>

###
[`v2.17.0`](https://redirect.github.com/ansible-community/antsibull-docs/releases/tag/2.17.0)

[Compare
Source](https://redirect.github.com/ansible-community/antsibull-docs/compare/2.16.3...2.17.0)

##### Release Summary

Feature and bugfix release.

##### Minor Changes

- Extend deprecation/removal note that collections can be installed
manually after removal
([#&#8203;371](https://redirect.github.com/ansible-community/antsibull-docs/pull/371)).

##### Bugfixes

- Make sure that all errors are caught during documentation
normalization. Until now exceptions derived from
<code>BaseException</code> that are not derived from
<code>Exception</code> are not handled correctly
([#&#8203;389](https://redirect.github.com/ansible-community/antsibull-docs/pull/389)).

</details>

---

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are satisfied.

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rebase/retry checkbox.

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---

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---

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requirements.txt

@@ -9,4 +9,4 @@ requests
 
 # Development requirements
 pylint
-antsibull-docs>=2.16,<2.17
+antsibull-docs>=2.17,<2.18