Bump Swashbuckle.AspNetCore.Newtonsoft from 6.1.5 to 6.2.1 (#978)

Bumps [Swashbuckle.AspNetCore.Newtonsoft](https://github.com/domaindrivendev/Swashbuckle.AspNetCore) from 6.1.5 to 6.2.1.
- [Release notes](https://github.com/domaindrivendev/Swashbuckle.AspNetCore/releases)
- [Commits](domaindrivendev/Swashbuckle.AspNetCore@v6.1.5...v6.2.1)

---
updated-dependencies:
- dependency-name: Swashbuckle.AspNetCore.Newtonsoft
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

src/Microsoft.Health.Dicom.Api/Microsoft.Health.Dicom.Api.csproj

@@ -27,7 +27,7 @@
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="Scrutor" Version="3.3.0" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="6.2.1" />
-    <PackageReference Include="Swashbuckle.AspNetCore.Newtonsoft" Version="6.1.5" />
+    <PackageReference Include="Swashbuckle.AspNetCore.Newtonsoft" Version="6.2.1" />
     <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="6.12.2" />
     <PackageReference Include="Microsoft.AspNetCore.Http" Version="2.2.2" PrivateAssets="All" />
     <PackageReference Include="System.Text.Encodings.Web" Version="5.0.1" PrivateAssets="All" />