Bump bootstrap from 3.3.6 to 3.4.1 in /OwinOAuthProvidersDemo

Bumps bootstrap from 3.3.6 to 3.4.1.

---
updated-dependencies:
- dependency-name: bootstrap
  dependency-type: direct:production
...

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

OwinOAuthProvidersDemo/packages.config

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Antlr" version="3.5.0.2" targetFramework="net45" />
-  <package id="bootstrap" version="3.3.6" targetFramework="net45" />
+  <package id="bootstrap" version="3.4.1" 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" />