build(deps): bump core from a17136c to 1b9efa8 (Azure#4920)

Bumps [core](https://github.com/microsoft/typespec) from `a17136c` to
`1b9efa8`.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/microsoft/typespec/commit/1b9efa87f7baca9fee8471a44841df1f69a9e0ce"><code>1b9efa8</code></a>
[graphql] Add <code>@​typespec/graphql</code> emitter (<a
href="https://redirect.github.com/microsoft/typespec/issues/11000">#11000</a>)</li>
<li>See full diff in <a
href="https://github.com/microsoft/typespec/compare/a17136c6be2ba1c59f43aba1a0f30066300ba60a...1b9efa87f7baca9fee8471a44841df1f69a9e0ce">compare
view</a></li>
</ul>
</details>
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core

@@ -67,6 +67,7 @@ catalog:
   "@octokit/core": ^7.0.6
   "@octokit/plugin-paginate-graphql": ^6.0.0
   "@octokit/plugin-rest-endpoint-methods": ^17.0.0
+  "@pinterest/alloy-graphql": ^1.1.0
   "@playwright/test": ^1.60.0
   "@pnpm/workspace.find-packages": ^1000.0.65
   "@scalar/json-magic": ^0.12.15
@@ -137,6 +138,7 @@ catalog:
   execa: ^9.6.1
   express: ^5.2.1
   fast-xml-parser: ^5.7.0
+  graphql: ^17.0.0-alpha.9
   happy-dom: ^20.9.0
   hast-util-to-html: ^9.0.5
   is-unicode-supported: ^2.1.0