Merge pull request #9 from stho32/dependabot/nuget/Source/spamfilter/spamfilter.Interfaces/MailKit-4.15.1

Bump MailKit from 3.0.0 to 4.15.1

Author: stho32

Source/spamfilter/spamfilter.Interfaces/spamfilter.Interfaces.csproj

@@ -9,7 +9,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="MailKit" Version="3.0.0" />
+      <PackageReference Include="MailKit" Version="4.15.1" />
     </ItemGroup>
 
 </Project>