tools(deps-dev): Update vimeo/psalm requirement from 6.10.2 to 6.10.3 in /tools/psalm (#555)

Updates the requirements on
[vimeo/psalm](https://github.com/vimeo/psalm) to permit the latest
version.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/vimeo/psalm/releases">vimeo/psalm's
releases</a>.</em></p>
<blockquote>
<h2>6.10.3</h2>
<!-- raw HTML omitted -->
<h2>What's Changed</h2>
<h3>Fixes</h3>
<ul>
<li>Fix <a
href="https://redirect.github.com/vimeo/psalm/issues/11420">#11420</a>
by <a href="https://github.com/danog"><code>@​danog</code></a> in <a
href="https://redirect.github.com/vimeo/psalm/pull/11421">vimeo/psalm#11421</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/vimeo/psalm/compare/6.10.2...6.10.3">https://github.com/vimeo/psalm/compare/6.10.2...6.10.3</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/vimeo/psalm/commit/90b5b9f5e7c8e441b191d3c82c58214753d7c7c1"><code>90b5b9f</code></a>
Merge pull request <a
href="https://redirect.github.com/vimeo/psalm/issues/11421">#11421</a>
from danog/fix_11420</li>
<li><a
href="https://github.com/vimeo/psalm/commit/b869683da2448090069cca91620777d435e0d256"><code>b869683</code></a>
Fix</li>
<li><a
href="https://github.com/vimeo/psalm/commit/c1242679c7245ca4657a3fc5599eb4a628bb0fa7"><code>c124267</code></a>
Add test</li>
<li><a
href="https://github.com/vimeo/psalm/commit/b031efbcb032c0b103c6516f8a01a79104c6d109"><code>b031efb</code></a>
Fix <a
href="https://redirect.github.com/vimeo/psalm/issues/11420">#11420</a></li>
<li><a
href="https://github.com/vimeo/psalm/commit/309c8d440de5147072cd98c0c8315691205f214f"><code>309c8d4</code></a>
Allow running on PHP nightly</li>
<li>See full diff in <a
href="https://github.com/vimeo/psalm/compare/6.10.2...6.10.3">compare
view</a></li>
</ul>
</details>
<br />

<details>
<summary>Most Recent Ignore Conditions Applied to This Pull
Request</summary>

| Dependency Name | Ignore Conditions |
| --- | --- |
| vimeo/psalm | [>= 5.a, < 6] |
</details>


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tools/psalm/composer.json

@@ -7,7 +7,7 @@
     },
     "require-dev": {
         "roave/security-advisories": "dev-latest",
-        "vimeo/psalm": "6.10.2"
+        "vimeo/psalm": "6.10.3"
     },
     "prefer-stable": true,
     "config": {