fix: Labtracker/packages.config to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-DOTNET-JQUERY-450226
- https://snyk.io/vuln/SNYK-DOTNET-JQUERY-565440
- https://snyk.io/vuln/SNYK-DOTNET-NEWTONSOFTJSON-2774678

Labtracker/packages.config

@@ -10,7 +10,7 @@
   <package id="ExcelDataReader" version="3.6.0" targetFramework="net472" />
   <package id="ExcelDataReader.DataSet" version="3.6.0" targetFramework="net472" />
   <package id="Hangfire.Core" version="1.7.27" targetFramework="net472" />
-  <package id="jQuery" version="3.3.1" targetFramework="net472" />
+  <package id="jQuery" version="3.5.0" targetFramework="net472" />
   <package id="Microsoft.AspNet.FriendlyUrls" version="1.0.2" targetFramework="net472" />
   <package id="Microsoft.AspNet.FriendlyUrls.Core" version="1.0.2" targetFramework="net472" />
   <package id="Microsoft.AspNet.Identity.Core" version="2.2.2" targetFramework="net472" />
@@ -40,7 +40,7 @@
   <package id="Microsoft.Owin.Security.Twitter" version="4.0.0" targetFramework="net472" />
   <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net472" />
   <package id="Modernizr" version="2.8.3" targetFramework="net472" />
-  <package id="Newtonsoft.Json" version="11.0.1" targetFramework="net472" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net472" />
   <package id="Owin" version="1.0" targetFramework="net472" />
   <package id="SQLite.CodeFirst" version="1.5.2.28" targetFramework="net472" />
   <package id="System.Numerics.Vectors" version="4.5.0" targetFramework="net472" />