Bump core from 753ca1a to e9b17b3 (#313)

Bumps [core](https://github.com/microsoft/typespec) from `753ca1a` to
`e9b17b3`.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/microsoft/typespec/commit/e9b17b384d4dbe9ce0ee92c35f5c4332d275ff21"><code>e9b17b3</code></a>
Add term of use and trademark links (<a
href="https://redirect.github.com/microsoft/typespec/issues/2949">#2949</a>)</li>
<li><a
href="https://github.com/microsoft/typespec/commit/15702e82f414eb80e6449fa9d7a9f281458b64cc"><code>15702e8</code></a>
Move compiler utils to <code>/utils</code> exports (<a
href="https://redirect.github.com/microsoft/typespec/issues/2919">#2919</a>)</li>
<li>See full diff in <a
href="https://github.com/microsoft/typespec/compare/753ca1ad9b8a98857019c460929de6ac7c9498ab...e9b17b384d4dbe9ce0ee92c35f5c4332d275ff21">compare
view</a></li>
</ul>
</details>
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