Bump jQuery.Validation in /samples/searchable-todo/src/searchabletodo

Bumps jQuery.Validation from 1.13.1 to 1.19.4.

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

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

samples/searchable-todo/src/searchabletodo/packages.config

@@ -1,10 +1,10 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Antlr" version="3.5.0.2" targetFramework="net45" />
   <package id="bootstrap" version="3.4.1" targetFramework="net45" />
   <package id="jQuery" version="2.1.3" targetFramework="net45" />
   <package id="jQuery.UI.Combined" version="1.11.3" targetFramework="net45" />
-  <package id="jQuery.Validation" version="1.13.1" targetFramework="net45" />
+  <package id="jQuery.Validation" version="1.19.4" targetFramework="net45" />
   <package id="Microsoft.AspNet.Mvc" version="5.2.3" targetFramework="net45" />
   <package id="Microsoft.AspNet.Razor" version="3.2.3" targetFramework="net45" />
   <package id="Microsoft.AspNet.Web.Optimization" version="1.1.3" targetFramework="net45" />