chore(deps): bump SixLabors.ImageSharp from 2.1.8 to 2.1.9 in /src/Playwright.Tests (#2965)

chore(deps): bump SixLabors.ImageSharp in /src/Playwright.Tests

Bumps [SixLabors.ImageSharp](https://github.com/SixLabors/ImageSharp) from 2.1.8 to 2.1.9.
- [Release notes](https://github.com/SixLabors/ImageSharp/releases)
- [Commits](https://github.com/SixLabors/ImageSharp/compare/v2.1.8...v2.1.9)

---
updated-dependencies:
- dependency-name: SixLabors.ImageSharp
  dependency-type: direct:production
...

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src/Playwright.Tests/Playwright.Tests.csproj

@@ -27,7 +27,7 @@
         <PackageReference Include="NUnit" Version="3.14.0" />
         <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
         <PackageReference Include="Mono.Posix.NETStandard" Version="1.0.0" />
-        <PackageReference Include="SixLabors.ImageSharp" Version="2.1.8" />
+        <PackageReference Include="SixLabors.ImageSharp" Version="2.1.9" />
         <PackageReference Include="NETStandard.Library" Version="2.0.3" />
         <PackageReference Include="System.CodeDom" Version="6.0.0" />
         <PackageReference Include="System.Net.Http" Version="4.3.4" />