Bump Fody from 6.9.0 to 6.9.1 in /src (#573)

Author: dependabot[bot]

src/Directory.Packages.props

@@ -7,7 +7,7 @@
     <PackageVersion Include="Argon" Version="0.25.0" />
     <PackageVersion Include="Caseless.Fody" Version="1.9.1" />
     <PackageVersion Include="EmptyFiles" Version="8.5.1" />
-    <PackageVersion Include="Fody" Version="6.9.0" />
+    <PackageVersion Include="Fody" Version="6.9.1" />
     <PackageVersion Include="MarkdownSnippets.MsBuild" Version="27.0.2" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageVersion Include="Polyfill" Version="7.5.0" />