Bump ktsu.StrongStrings from 1.2.1 to 1.2.3

Bumps [ktsu.StrongStrings](https://github.com/ktsu-dev/StrongStrings) from 1.2.1 to 1.2.3.
- [Release notes](https://github.com/ktsu-dev/StrongStrings/releases)
- [Commits](ktsu-dev/StrongStrings@v1.2.1...v1.2.3)

---
updated-dependencies:
- dependency-name: ktsu.StrongStrings
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

StrongPaths/StrongPaths.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <ItemGroup>
       <PackageReference Include="ktsu.Extensions" Version="1.0.9" />
-      <PackageReference Include="ktsu.StrongStrings" Version="1.2.1" />
+      <PackageReference Include="ktsu.StrongStrings" Version="1.2.3" />
     </ItemGroup>
 
     <Target Name="PreBuild" BeforeTargets="PreBuildEvent">