build(deps): update derailed/popeye to v0.21.6

This MR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [derailed/popeye](https://github.com/derailed/popeye) | patch | `v0.21.5` -> `v0.21.6` |

MR created with the help of [el-capitano/tools/renovate-bot](https://gitlab.com/el-capitano/tools/renovate-bot).

**Proposed changes to behavior should be submitted there as MRs.**

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### Release Notes

<details>
<summary>derailed/popeye (derailed/popeye)</summary>

### [`v0.21.6`](https://github.com/derailed/popeye/releases/tag/v0.21.6)

[Compare Source](derailed/popeye@v0.21.5...v0.21.6)

<img src="https://raw.githubusercontent.com/derailed/popeye/master/assets/popeye_logo.png" align="right" width="200" height="auto"/>

### Release v0.21.6
#### Notes

Thank you to all that contributed with flushing out issues and enhancements for Popeye! I'll try to mark some of these issues as fixed. But if you don't mind grab the latest rev and see if we're happier with some of the fixes! If you've filed an issue please help me verify and close. Your support, kindness and awesome suggestions to make Popeye better is as ever very much noticed and appreciated!

This project offers a GitHub Sponsor button (over here 👆). As you well know this is not pimped out by big corps with deep pockets. If you feel `Popeye` is saving you cycles diagnosing potential cluster issues please consider sponsoring this project!! It does go a long way in keeping our servers lights on and beers in our fridge.

Also if you dig this tool, please make some noise on social! [@&#8203;kitesurfer](https://twitter.com/kitesurfer)

***

#### Maintenance Release

***

#### Resolved Issues

-   [#&#8203;370](derailed/popeye#370) default service account check
-   [#&#8203;356](derailed/popeye#356) Allow foreground execution, with output to STDOUT/STDERR and disabling output to popeye.log file
-   [#&#8203;341](derailed/popeye#341) Linter Node : no linters matched query
-   [#&#8203;337](derailed/popeye#337) Output logs in stdout instead of file
-   [#&#8203;301](derailed/popeye#301) Allow Popeye to be used by more than one user on a host (/tmp/popeye.log permission problem)
-   [#&#8203;267](derailed/popeye#267) Allow container exclusions based on regex
-   [#&#8203;200](derailed/popeye#200) Can't filter containers in spinach.yaml for deployments
-   [#&#8203;168](derailed/popeye#168) Skip checks at container level

***

<img src="https://raw.githubusercontent.com/derailed/popeye/master/assets/imhotep_logo.png" width="32" height="auto"/>  © 2024 Imhotep Software LLC. All materials licensed under [Apache v2.0](http://www.apache.org/licenses/LICENSE-2.0)

</details>

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<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzOS44Ni4wIiwidXBkYXRlZEluVmVyIjoiMzkuODYuMCIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOlsiUmVub3ZhdGUgQm90Il19-->

chezmoi/dot_config/aquaproj-aqua/aqua.yaml

@@ -337,7 +337,7 @@ packages:
 - name: printfn/fend@v1.5.5
   description: Arbitrary-precision unit-aware calculator
   link: https://github.com/printfn/fend
-- name: derailed/popeye@v0.21.5
+- name: derailed/popeye@v0.21.6
   description: A Kubernetes cluster resource sanitizer
   link: https://github.com/derailed/popeye
 - name: Macchina-CLI/macchina@v6.4.0