Merge pull request #94 from jcdcdev/snyk-fix-8b6af062dec63461449b68d770cc83c4

[Snyk] Security upgrade Umbraco.Cms from 15.3.1 to 15.4.2

Author: jcdcdev

src/jcdcdev.Umbraco.ExtendedMarkdownEditor.TestSite/jcdcdev.Umbraco.ExtendedMarkdownEditor.TestSite.csproj

@@ -6,7 +6,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Umbraco.Cms" Version="15.3.1" />
+        <PackageReference Include="Umbraco.Cms" Version="15.4.2" />
         <PackageReference Include="uSync" Version="15.1.6"/>
     </ItemGroup>