Bump Costura.Fody from 5.7.0 to 6.0.0 in /src

Bumps [Costura.Fody](https://github.com/Fody/Costura) from 5.7.0 to 6.0.0.
- [Release notes](https://github.com/Fody/Costura/releases)
- [Changelog](https://github.com/Fody/Costura/blob/develop/GitReleaseManager.yaml)
- [Commits](Fody/Costura@5.7.0...6.0.0)

---
updated-dependencies:
- dependency-name: Costura.Fody
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

src/Orc.Squirrel.Xaml/Orc.Squirrel.Xaml.csproj

@@ -18,7 +18,7 @@
 
   <ItemGroup>
     <PackageReference Include="Catel.Fody" Version="4.9.0" PrivateAssets="all" />
-    <PackageReference Include="Costura.Fody" Version="5.7.0" PrivateAssets="all" />
+    <PackageReference Include="Costura.Fody" Version="6.0.0" PrivateAssets="all" />
     <PackageReference Include="Fody" Version="6.9.1" PrivateAssets="all">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>

src/Orc.Squirrel/Orc.Squirrel.csproj

@@ -17,7 +17,7 @@
 
   <ItemGroup>
     <PackageReference Include="Catel.Fody" Version="4.9.0" PrivateAssets="all" />
-    <PackageReference Include="Costura.Fody" Version="5.7.0" PrivateAssets="all" />
+    <PackageReference Include="Costura.Fody" Version="6.0.0" PrivateAssets="all" />
     <PackageReference Include="Fody" Version="6.9.1" PrivateAssets="all">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>