Bump @metamask/post-message-stream from 8.1.0 to 8.1.1 (#446)

Bumps
[@metamask/post-message-stream](https://github.com/MetaMask/post-message-stream)
from 8.1.0 to 8.1.1.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/MetaMask/post-message-stream/releases"><code>@​metamask/post-message-stream</code>'s
releases</a>.</em></p>
<blockquote>
<h2>8.1.1</h2>
<h3>Changed</h3>
<ul>
<li>Bump <code>@metamask/utils</code> from <code>^8.1.0</code> to
<code>^9.0.0</code> (<a
href="https://redirect.github.com/MetaMask/post-message-stream/pull/140">#140</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/MetaMask/post-message-stream/blob/main/CHANGELOG.md"><code>@​metamask/post-message-stream</code>'s
changelog</a>.</em></p>
<blockquote>
<h2>[8.1.1]</h2>
<h3>Changed</h3>
<ul>
<li>Bump <code>@metamask/utils</code> from <code>^8.1.0</code> to
<code>^9.0.0</code> (<a
href="https://redirect.github.com/MetaMask/post-message-stream/pull/140">#140</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/MetaMask/post-message-stream/commit/0550c6c51e74cd3aca6f16944bd0f2174fa9037b"><code>0550c6c</code></a>
8.1.1 (<a
href="https://redirect.github.com/MetaMask/post-message-stream/issues/141">#141</a>)</li>
<li><a
href="https://github.com/MetaMask/post-message-stream/commit/dacde8af033875e5cdcb4f967f61a72ca7aebd26"><code>dacde8a</code></a>
Bump <code>@metamask/utils</code> from <code>^8.1.0</code> to
<code>^9.0.0</code>, devDep <code>typescript</code> from `~...</li>
<li><a
href="https://github.com/MetaMask/post-message-stream/commit/7a6fb9a33e0aabbefd2bb03b1ca80bc4006db213"><code>7a6fb9a</code></a>
chore: declare yarn version 1.22.22 in package.json (<a
href="https://redirect.github.com/MetaMask/post-message-stream/issues/136">#136</a>)</li>
<li>See full diff in <a
href="https://github.com/MetaMask/post-message-stream/compare/v8.1.0...v8.1.1">compare
view</a></li>
</ul>
</details>
<br />


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yarn.lock

@@ -4969,12 +4969,12 @@ __metadata:
   linkType: hard
 
 "@metamask/post-message-stream@npm:^8.1.0":
-  version: 8.1.0
-  resolution: "@metamask/post-message-stream@npm:8.1.0"
+  version: 8.1.1
+  resolution: "@metamask/post-message-stream@npm:8.1.1"
   dependencies:
-    "@metamask/utils": ^8.1.0
+    "@metamask/utils": ^9.0.0
     readable-stream: 3.6.2
-  checksum: 84b5f90ee28d3440520088c01fb64c42a2ed3e761bef4285c8dd72f78c3f634d58ac3314c5ebaedabc92e3db369960e17d61b84719f2d6271cd6d4957f2b6704
+  checksum: ffdcda20fd3aad604de756199d77721e41051fb0fe3a424a448858f1731978f4aefe64758932ca1e5ffac12f0e52fd0d00619f11c3d7eeb4fc1dda250e4e06f6
   languageName: node
   linkType: hard
 
@@ -5243,30 +5243,13 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@metamask/superstruct@npm:^3.0.0, @metamask/superstruct@npm:^3.1.0":
+"@metamask/superstruct@npm:^3.1.0":
   version: 3.1.0
   resolution: "@metamask/superstruct@npm:3.1.0"
   checksum: 00e4d0c0aae8b25ccc1885c1db0bb4ed1590010570140c255e4deee3bf8a10c859c8fce5e475b4ae09c8a56316207af87585b91f7f5a5c028d668ccd111f19e3
   languageName: node
   linkType: hard
 
-"@metamask/utils@npm:^8.1.0":
-  version: 8.5.0
-  resolution: "@metamask/utils@npm:8.5.0"
-  dependencies:
-    "@ethereumjs/tx": ^4.2.0
-    "@metamask/superstruct": ^3.0.0
-    "@noble/hashes": ^1.3.1
-    "@scure/base": ^1.1.3
-    "@types/debug": ^4.1.7
-    debug: ^4.3.4
-    pony-cause: ^2.1.10
-    semver: ^7.5.4
-    uuid: ^9.0.1
-  checksum: e8eac1c796c3f6b623be3c2736e8682248620f666b180f5c12ce56ee09587d4e28b6811862139a05c7a1bec91415f10ccf0516f3cdf342f88b0189d2a057c24b
-  languageName: node
-  linkType: hard
-
 "@metamask/utils@npm:^9.0.0, @metamask/utils@npm:^9.1.0":
   version: 9.1.0
   resolution: "@metamask/utils@npm:9.1.0"