Bump package versions

Author: rickbutterfield

src/Umbraco.Cms.15.x/Umbraco.Cms.15.x.csproj

@@ -7,10 +7,10 @@
 	</PropertyGroup>
 
 	<ItemGroup>
-		<PackageReference Include="Umbraco.Cms" Version="15.4.0" />
-		<PackageReference Include="Umbraco.Cms.Core" Version="15.4.0" />
-		<PackageReference Include="Umbraco.Cms.StaticAssets" Version="15.4.0" />
-		<PackageReference Include="uSync" Version="15.1.5" />
+		<PackageReference Include="Umbraco.Cms" Version="15.4.3" />
+		<PackageReference Include="Umbraco.Cms.Core" Version="15.4.3" />
+		<PackageReference Include="Umbraco.Cms.StaticAssets" Version="15.4.3" />
+		<PackageReference Include="uSync" Version="15.1.9" />
 	</ItemGroup>
 
 	<ItemGroup>