chore(deps): update step-security/harden-runner action to v2.19.4 (#835)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[step-security/harden-runner](https://redirect.github.com/step-security/harden-runner)
| action | patch | `v2.19.3` → `v2.19.4` |

---

> [!WARNING]
> Some dependencies could not be looked up. Check the [Dependency
Dashboard](../issues/316) for more information.

---

### Release Notes

<details>
<summary>step-security/harden-runner
(step-security/harden-runner)</summary>

###
[`v2.19.4`](https://redirect.github.com/step-security/harden-runner/releases/tag/v2.19.4)

[Compare
Source](https://redirect.github.com/step-security/harden-runner/compare/v2.19.3...v2.19.4)

##### What's Changed

- Improvements for HTTPS Monitoring for the Enterprise tier of Harden
Runner

**Full Changelog**:
<step-security/harden-runner@v2.19.3...v2.19.4>

</details>

---

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View the [repository job
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Author: renovate[bot]

.github/workflows/ci.yml

@@ -119,7 +119,7 @@ jobs:
       contents: read
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@ab7a9404c0f3da075243ca237b5fac12c98deaa5 # v2.19.3
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
         with:
           egress-policy: audit