Update Directory.Packages.props

Author: SimonCropp

src/Directory.Packages.props

@@ -9,7 +9,7 @@
     <PackageVersion Include="NUnit" Version="4.3.2" />
     <PackageVersion Include="NUnit3TestAdapter" Version="5.0.0" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.150" />
-    <PackageVersion Include="SixLabors.ImageSharp" Version="3.1.7" />
+    <PackageVersion Include="SixLabors.ImageSharp" Version="3.1.8" />
     <PackageVersion Include="Verify" Version="29.3.0" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
     <PackageVersion Include="Verify.Nunit" Version="29.3.0" />