build(deps-dev): bump @changesets/cli from 2.29.6 to 2.29.7 (#472)

Bumps [@changesets/cli](https://github.com/changesets/changesets) from
2.29.6 to 2.29.7.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/changesets/changesets/releases"><code>@​changesets/cli</code>'s
releases</a>.</em></p>
<blockquote>
<h2><code>@​changesets/cli</code><a
href="https://github.com/2"><code>@​2</code></a>.29.7</h2>
<h3>Patch Changes</h3>
<ul>
<li>Updated dependencies [<a
href="https://github.com/changesets/changesets/commit/957f24ed0446494c5709189ae57583f72c716d43"><code>957f24e</code></a>]:
<ul>
<li><code>@​changesets/apply-release-plan</code><a
href="https://github.com/7"><code>@​7</code></a>.0.13</li>
</ul>
</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/changesets/changesets/commit/8c065c4313e06e13ce48d6681aa9a253d69f655f"><code>8c065c4</code></a>
Version Packages (<a
href="https://redirect.github.com/changesets/changesets/issues/1726">#1726</a>)</li>
<li><a
href="https://github.com/changesets/changesets/commit/957f24ed0446494c5709189ae57583f72c716d43"><code>957f24e</code></a>
Fix an issue that caused an incorrect <code>CHANGELOG</code> to be
generated when a chan...</li>
<li>See full diff in <a
href="https://github.com/changesets/changesets/compare/@changesets/cli@2.29.6...@changesets/cli@2.29.7">compare
view</a></li>
</ul>
</details>
<br />


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package.json

@@ -14,7 +14,7 @@
   "author": "@smartcontractkit",
   "devDependencies": {
     "@changesets/changelog-github": "^0.5.0",
-    "@changesets/cli": "~2.29.6",
+    "@changesets/cli": "~2.29.7",
     "changeset": "^0.2.6"
   },
   "repository": "https://github.com/smartcontractkit/mcms"