Add support for the EF 7 while using .net 6

Author: dbulgakov

src/EntityFrameworkCore.DataEncryption/EntityFrameworkCore.DataEncryption.csproj

@@ -35,7 +35,7 @@
 		<PackageReference Include="Microsoft.EntityFrameworkCore" Version="[3.1,6)" />
 	</ItemGroup>
 	<ItemGroup Condition="('$(TargetFramework)' == 'net6.0')">
-		<PackageReference Include="Microsoft.EntityFrameworkCore" Version="[6,7)" />
+		<PackageReference Include="Microsoft.EntityFrameworkCore" Version="[6,7]" />
 	</ItemGroup>
 	<ItemGroup Condition="('$(TargetFramework)' == 'net7.0')">
 		<PackageReference Include="Microsoft.EntityFrameworkCore" Version="[7,)" />