chore(deps): update actions/download-artifact action to v4.1.6 (#605)

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This PR contains the following updates:

| Package | Type | Update | Change | Pending |
|---|---|---|---|---|
|
[actions/download-artifact](https://github.com/actions/download-artifact)
| action | patch | `v4.1.5` -> `v4.1.6` | `v4.1.7` |

---

### Release Notes

<details>
<summary>actions/download-artifact (actions/download-artifact)</summary>

###
[`v4.1.6`](https://github.com/actions/download-artifact/releases/tag/v4.1.6)

[Compare
Source](https://github.com/actions/download-artifact/compare/v4.1.5...v4.1.6)

#### What's Changed

- updating `@actions/artifact` dependency to v2.1.6 by
[@&#8203;eggyhead](https://github.com/eggyhead) in
[actions/download-artifact#324

**Full Changelog**:
actions/download-artifact@v4.1.5...v4.1.6

</details>

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.github/workflows/terraform-plan.yml

@@ -48,7 +48,7 @@ jobs:
           aws-region: eu-central-1
 
       - name: Retrieve email-function artifact
-        uses: actions/download-artifact@v4.1.5
+        uses: actions/download-artifact@v4.1.6
         with:
           name: email-function-dist
           path: bun-packages/packages/email-function/dist