chore(deps): update dependency jint to v3.1.5

Author: renovate[bot]

Rnwood.Smtp4dev/Rnwood.Smtp4dev.csproj

@@ -32,7 +32,7 @@
     <PackageReference Include="DeepEqual" Version="5.1.0" />
     <PackageReference Include="DotNet.Glob" Version="3.1.3" />
     <PackageReference Include="HtmlAgilityPack" Version="1.11.61" />
-    <PackageReference Include="Jint" Version="3.0.1" />
+    <PackageReference Include="Jint" Version="3.1.5" />
     <PackageReference Include="LinqKit" Version="1.2.5" />
     <PackageReference Include="MailKit" Version="4.6.0" />
      <PackageReference Include="Microsoft.AspNetCore.Hosting.WindowsServices" Version="8.0.6" />