Upgrade: [dependabot] - bump @middy/http-header-normalizer from 6.3.0 to 6.3.1 (#1858)

Bumps
[@middy/http-header-normalizer](https://github.com/middyjs/middy/tree/HEAD/packages/http-header-normalizer)
from 6.3.0 to 6.3.1.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/middyjs/middy/releases"><code>@​middy/http-header-normalizer</code>'s
releases</a>.</em></p>
<blockquote>
<h2>6.3.1</h2>
<h2>What's Changed</h2>
<ul>
<li>Valid multipart form data headers rejected <a
href="https://github.com/mn-prp"><code>@​mn-prp</code></a> <a
href="https://github.com/middyjs/middy/tree/HEAD/packages/http-header-normalizer/issues/1349">#1349</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/middyjs/middy/compare/6.3.0...6.3.1">https://github.com/middyjs/middy/compare/6.3.0...6.3.1</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/middyjs/middy/commit/c5307f03819d16cc74dc9a8cba4ec0840c05befd"><code>c5307f0</code></a>
chore: version bump</li>
<li>See full diff in <a
href="https://github.com/middyjs/middy/commits/6.3.1/packages/http-header-normalizer">compare
view</a></li>
</ul>
</details>
<br />


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score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=@middy/http-header-normalizer&package-manager=npm_and_yarn&previous-version=6.3.0&new-version=6.3.1)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

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</details>

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -19,7 +19,7 @@
     "@aws-lambda-powertools/parameters": "^2.20.0",
     "@aws-sdk/client-secrets-manager": "^3.817.0",
     "@middy/core": "^6.3.0",
-    "@middy/http-header-normalizer": "^6.3.0",
+    "@middy/http-header-normalizer": "^6.3.1",
     "@middy/input-output-logger": "^6.3.0",
     "@nhs/fhir-middy-error-handler": "^2.1.33",
     "@NHSDigital/eps-spine-client": "^2.1.38",