Bump Swashbuckle.AspNetCore.SwaggerUI in /src/PublicApi

Bumps [Swashbuckle.AspNetCore.SwaggerUI](https://github.com/domaindrivendev/Swashbuckle.AspNetCore) from 6.2.3 to 6.4.0.
- [Release notes](https://github.com/domaindrivendev/Swashbuckle.AspNetCore/releases)
- [Commits](domaindrivendev/Swashbuckle.AspNetCore@v6.2.3...v6.4.0)

---
updated-dependencies:
- dependency-name: Swashbuckle.AspNetCore.SwaggerUI
  dependency-type: direct:production
...

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

Author: dependabot[bot]

src/PublicApi/PublicApi.csproj

@@ -14,7 +14,7 @@
     <PackageReference Include="MediatR" Version="9.0.0" />
     <PackageReference Include="MediatR.Extensions.Microsoft.DependencyInjection" Version="9.0.0" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="6.2.3" />
-    <PackageReference Include="Swashbuckle.AspNetCore.SwaggerUI" Version="6.2.3" />
+    <PackageReference Include="Swashbuckle.AspNetCore.SwaggerUI" Version="6.4.0" />
     <PackageReference Include="Swashbuckle.AspNetCore.Annotations" Version="6.2.3" />
     <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="6.0.0" />
     <PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="6.0.0" />