⬆️ Bump github.com/stretchr/testify from 1.11.0 to 1.11.1 in /utils (#689)

Bumps [github.com/stretchr/testify](https://github.com/stretchr/testify)
from 1.11.0 to 1.11.1.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/stretchr/testify/releases">github.com/stretchr/testify's
releases</a>.</em></p>
<blockquote>
<h2>v1.11.1</h2>
<p>This release fixes <a
href="https://redirect.github.com/stretchr/testify/issues/1785">#1785</a>
introduced in v1.11.0 where expected argument values implementing the
stringer interface (<code>String() string</code>) with a method which
mutates their value, when passed to mock.Mock.On
(<code>m.On(&quot;Method&quot;, &lt;expected&gt;).Return()</code>) or
actual argument values passed to mock.Mock.Called may no longer match
one another where they previously did match. The behaviour prior to
v1.11.0 where the stringer is always called is restored. Future testify
releases may not call the stringer method at all in this case.</p>
<h2>What's Changed</h2>
<ul>
<li>Backport <a
href="https://redirect.github.com/stretchr/testify/issues/1786">#1786</a>
to release/1.11: mock: revert to pre-v1.11.0 argument matching behavior
for mutating stringers by <a
href="https://github.com/brackendawson"><code>@​brackendawson</code></a>
in <a
href="https://redirect.github.com/stretchr/testify/pull/1788">stretchr/testify#1788</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/stretchr/testify/compare/v1.11.0...v1.11.1">https://github.com/stretchr/testify/compare/v1.11.0...v1.11.1</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/stretchr/testify/commit/2a57335dc9cd6833daa820bc94d9b40c26a7917d"><code>2a57335</code></a>
Merge pull request <a
href="https://redirect.github.com/stretchr/testify/issues/1788">#1788</a>
from brackendawson/1785-backport-1.11</li>
<li><a
href="https://github.com/stretchr/testify/commit/af8c91234f184009f57ef29027b39ca89cb00100"><code>af8c912</code></a>
Backport <a
href="https://redirect.github.com/stretchr/testify/issues/1786">#1786</a>
to release/1.11</li>
<li>See full diff in <a
href="https://github.com/stretchr/testify/compare/v1.11.0...v1.11.1">compare
view</a></li>
</ul>
</details>
<br />


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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Monty Bot <monty-bot@arm.com>

Author: dependabot[bot]

changes/20250828113208.bugfix

@@ -0,0 +1 @@
+Dependency upgrade: testify-1.11.1

changes/20250828113210.bugfix

@@ -0,0 +1 @@
+Dependency upgrade: testify-1.11.1