Bump jQuery.Validation from 1.15.0 to 1.19.3 in /OwinOAuthProvidersDemo

Bumps jQuery.Validation from 1.15.0 to 1.19.3.

---
updated-dependencies:
- dependency-name: jQuery.Validation
  dependency-type: direct:production
...

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

OwinOAuthProvidersDemo/packages.config

@@ -4,7 +4,7 @@
   <package id="bootstrap" version="3.3.6" targetFramework="net45" />
   <package id="EntityFramework" version="6.1.3" targetFramework="net45" />
   <package id="jQuery" version="2.2.3" targetFramework="net45" />
-  <package id="jQuery.Validation" version="1.15.0" targetFramework="net45" />
+  <package id="jQuery.Validation" version="1.19.3" targetFramework="net45" />
   <package id="Microsoft.AspNet.Identity.Core" version="2.2.1" targetFramework="net45" />
   <package id="Microsoft.AspNet.Identity.EntityFramework" version="2.2.1" targetFramework="net45" />
   <package id="Microsoft.AspNet.Identity.Owin" version="2.2.1" targetFramework="net45" />