[Snyk] Upgrade vue from 3.5.20 to 3.5.21 (#81)

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<h3>Snyk has created this PR to upgrade vue from 3.5.20 to 3.5.21.</h3>

:information_source: Keep your dependencies up-to-date. This makes it
easier to fix existing vulnerabilities and to more quickly identify and
fix newly disclosed vulnerabilities when they affect your project.

<hr/>


- The recommended version is **1 version** ahead of your current
version.

- The recommended version was released **a month ago**.



<details>
<summary><b>Release notes</b></summary>
<br/>
  <details>
    <summary>Package name: <b>vue</b></summary>
    <ul>
      <li>
<b>3.5.21</b> - <a
href="https://redirect.github.com/vuejs/core/releases/tag/v3.5.21">2025-09-02</a></br><p>For
stable releases, please refer to <a
href="https://redirect.github.com/vuejs/core/blob/main/CHANGELOG.md">CHANGELOG.md</a>
for details.<br>
For pre-releases, please refer to <a
href="https://redirect.github.com/vuejs/core/blob/minor/CHANGELOG.md">CHANGELOG.md</a>
of the <code>minor</code> branch.</p>
      </li>
      <li>
<b>3.5.20</b> - <a
href="https://redirect.github.com/vuejs/core/releases/tag/v3.5.20">2025-08-25</a></br><p>For
stable releases, please refer to <a
href="https://redirect.github.com/vuejs/core/blob/main/CHANGELOG.md">CHANGELOG.md</a>
for details.<br>
For pre-releases, please refer to <a
href="https://redirect.github.com/vuejs/core/blob/minor/CHANGELOG.md">CHANGELOG.md</a>
of the <code>minor</code> branch.</p>
      </li>
    </ul>
from <a href="https://redirect.github.com/vuejs/core/releases">vue
GitHub release notes</a>
  </details>
</details>

---

> [!IMPORTANT]
>
> - Check the changes in this PR to ensure they won't cause issues with
your project.
> - This PR was automatically created by Snyk using the credentials of a
real user.

---

**Note:** _You are seeing this because you or someone else with access
to this repository has authorized Snyk to open upgrade PRs._

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[//]: #
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Co-authored-by: snyk-bot <[email protected]>

Author: Szotkowski