Bump FodyHelpers to 6.9.3

---
updated-dependencies:
- dependency-name: FodyHelpers
  dependency-version: 6.9.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: FodyHelpers
  dependency-version: 6.9.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Publicize.Fody/Publicize.Fody.csproj

@@ -5,6 +5,6 @@
     <DebugType>portable</DebugType>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="FodyHelpers" Version="6.9.2" />
+    <PackageReference Include="FodyHelpers" Version="6.9.3" />
   </ItemGroup>
 </Project>

Tests/Tests.csproj

@@ -6,7 +6,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
-    <PackageReference Include="FodyHelpers" Version="6.9.2" />
+    <PackageReference Include="FodyHelpers" Version="6.9.3" />
     <PackageReference Include="Xunit" Version="2.9.3" />
     <PackageReference Include="Verify.Xunit" Version="30.3.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.1" PrivateAssets="all" />