Update webfactory/ssh-agent action to v0.9.0 (#5)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [webfactory/ssh-agent](https://github.com/webfactory/ssh-agent) |
action | minor | `v0.8.0` -> `v0.9.0` |

---

### Release Notes

<details>
<summary>webfactory/ssh-agent (webfactory/ssh-agent)</summary>

###
[`v0.9.0`](https://github.com/webfactory/ssh-agent/releases/tag/v0.9.0):
Update to `node20`

[Compare
Source](https://github.com/webfactory/ssh-agent/compare/v0.8.0...v0.9.0)

This release updates the action to run on Node.js v20. When you're
running on GitHub hosted runners, just go ahead and update. When you're
using self-hosted runners, please make sure you have Node.js v20
installed before updating from `v0.8.0` to `v0.9.0` of this action.

#### New Contributors

- [@&#8203;npwolf](https://github.com/npwolf) made their first
contribution in
[https://github.com/webfactory/ssh-agent/pull/196](https://github.com/webfactory/ssh-agent/pull/196)
- [@&#8203;benzado](https://github.com/benzado) made their first
contribution in
[https://github.com/webfactory/ssh-agent/pull/206](https://github.com/webfactory/ssh-agent/pull/206)
- [@&#8203;felix-seifert](https://github.com/felix-seifert) made their
first contribution in
[https://github.com/webfactory/ssh-agent/pull/199](https://github.com/webfactory/ssh-agent/pull/199)
- [@&#8203;archen](https://github.com/archen) made their first
contribution in
[https://github.com/webfactory/ssh-agent/pull/201](https://github.com/webfactory/ssh-agent/pull/201)

**Full Changelog**:
webfactory/ssh-agent@v0.8.0...v0.9.0

#### What's Changed

- Update README.md to reflect latest version by
[@&#8203;npwolf](https://github.com/npwolf) in
[https://github.com/webfactory/ssh-agent/pull/196](https://github.com/webfactory/ssh-agent/pull/196)
- Remove outdated claim from README by
[@&#8203;benzado](https://github.com/benzado) in
[https://github.com/webfactory/ssh-agent/pull/206](https://github.com/webfactory/ssh-agent/pull/206)
- chore: update all versions of `actions/checkout` to v4 by
[@&#8203;felix-seifert](https://github.com/felix-seifert) in
[https://github.com/webfactory/ssh-agent/pull/199](https://github.com/webfactory/ssh-agent/pull/199)
- bump to node20 by [@&#8203;archen](https://github.com/archen) in
[https://github.com/webfactory/ssh-agent/pull/201](https://github.com/webfactory/ssh-agent/pull/201)

#### New Contributors

- [@&#8203;npwolf](https://github.com/npwolf) made their first
contribution in
[https://github.com/webfactory/ssh-agent/pull/196](https://github.com/webfactory/ssh-agent/pull/196)
- [@&#8203;benzado](https://github.com/benzado) made their first
contribution in
[https://github.com/webfactory/ssh-agent/pull/206](https://github.com/webfactory/ssh-agent/pull/206)
- [@&#8203;felix-seifert](https://github.com/felix-seifert) made their
first contribution in
[https://github.com/webfactory/ssh-agent/pull/199](https://github.com/webfactory/ssh-agent/pull/199)
- [@&#8203;archen](https://github.com/archen) made their first
contribution in
[https://github.com/webfactory/ssh-agent/pull/201](https://github.com/webfactory/ssh-agent/pull/201)

**Full Changelog**:
webfactory/ssh-agent@v0.8.0...v0.9.0

</details>

---

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🔕 **Ignore**: Close this PR and you won't be reminded about this update
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---

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---

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action.yml

@@ -32,7 +32,7 @@ runs:
         toolchain: ${{ inputs.toolchain }}
         components: ${{ inputs.components }}
 
-    - uses: webfactory/ssh-agent@v0.8.0
+    - uses: webfactory/ssh-agent@v0.9.0
       with:
         ssh-private-key: ${{ inputs.ssh-private-key }}