Bump firebase-tools from 13.20.2 to 13.21.0 (#6134)

Bumps [firebase-tools](https://github.com/firebase/firebase-tools) from
13.20.2 to 13.21.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/firebase/firebase-tools/releases">firebase-tools's
releases</a>.</em></p>
<blockquote>
<h2>v13.21.0</h2>
<ul>
<li>Add apphosting:rollouts:create CLI command. (<a
href="https://redirect.github.com/firebase/firebase-tools/issues/7687">#7687</a>)</li>
<li>Updated emulator UI to version 1.14.0, which adds support for SDK
defined extensions.</li>
<li>Added emulator support for SDK defined extensions.</li>
<li>Fixed various trigger handling issues in the Functions emualtor,
including an issue where Eventarc functions would not be emulated
correctly after a reload.</li>
<li>Added support for generating Dart SDKs for Data Connect
connectors.</li>
<li>Commands now correctly default to 'default' alias when there is more
than one alias listed. (<a
href="https://redirect.github.com/firebase/firebase-tools/issues/7624">#7624</a>)</li>
<li>Updated Data Connect emulator to v1.15.0, which includes bug fixes
for <code>insertMany</code> and improved error handling.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/firebase/firebase-tools/commit/7dd671b81c0aad09b864a3de4fb3ee82b4564f2b"><code>7dd671b</code></a>
13.21.0</li>
<li><a
href="https://github.com/firebase/firebase-tools/commit/a2201fb9c64b0759ad5149d5947e6dddba5ceeb3"><code>a2201fb</code></a>
Updated to Data connect emulator 1.5.0 (<a
href="https://redirect.github.com/firebase/firebase-tools/issues/7805">#7805</a>)</li>
<li><a
href="https://github.com/firebase/firebase-tools/commit/bfc3fd4d638be7fbdac34800ed889dbb3ef27853"><code>bfc3fd4</code></a>
Use 'default' alias if there are multiple aliases (<a
href="https://redirect.github.com/firebase/firebase-tools/issues/7804">#7804</a>)</li>
<li><a
href="https://github.com/firebase/firebase-tools/commit/1085394c7c3c523323f4bdf43c38aec63c7e382c"><code>1085394</code></a>
Print instructions to assist FDC Onboard Flow (<a
href="https://redirect.github.com/firebase/firebase-tools/issues/7802">#7802</a>)</li>
<li><a
href="https://github.com/firebase/firebase-tools/commit/f350d6063acec4065ed4c4bb6aa6479f2972e108"><code>f350d60</code></a>
Create rollout from branch or git commit (<a
href="https://redirect.github.com/firebase/firebase-tools/issues/7687">#7687</a>)</li>
<li><a
href="https://github.com/firebase/firebase-tools/commit/158c2b572a2d8a977b617793d33cf373331b8389"><code>158c2b5</code></a>
FDC SDK init use the same outputDir pattern for both CLI and VS Code (<a
href="https://redirect.github.com/firebase/firebase-tools/issues/7790">#7790</a>)</li>
<li><a
href="https://github.com/firebase/firebase-tools/commit/36ce505086124c9ed13fb2878abb8e48fa84340c"><code>36ce505</code></a>
[FDC] Remove confusing prompts (<a
href="https://redirect.github.com/firebase/firebase-tools/issues/7801">#7801</a>)</li>
<li><a
href="https://github.com/firebase/firebase-tools/commit/cbc44c06cf066314444e8e6f00f623b5b292ecd2"><code>cbc44c0</code></a>
Update text for SDK Configuration button (<a
href="https://redirect.github.com/firebase/firebase-tools/issues/7798">#7798</a>)</li>
<li><a
href="https://github.com/firebase/firebase-tools/commit/c43d72b9effad5f17af9ca047b144b326eaea96c"><code>c43d72b</code></a>
Maintenance (<a
href="https://redirect.github.com/firebase/firebase-tools/issues/7789">#7789</a>)</li>
<li><a
href="https://github.com/firebase/firebase-tools/commit/495cb72c8e7a4270a4e9d602fddc9ee8fdca53d6"><code>495cb72</code></a>
Apphosting emulator - environment variable support (<a
href="https://redirect.github.com/firebase/firebase-tools/issues/7781">#7781</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/firebase/firebase-tools/compare/v13.20.2...v13.21.0">compare
view</a></li>
</ul>
</details>
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package.json

@@ -23,7 +23,7 @@
   },
   "devDependencies": {
     "@11ty/eleventy": "3.0.0",
-    "firebase-tools": "^13.20.2",
+    "firebase-tools": "^13.21.0",
     "hast-util-from-html": "^2.0.3",
     "hast-util-select": "^6.0.2",
     "hast-util-to-text": "^4.0.2",