fix: Always use UTF-8 encoding for saving documents

Update MarkdownGenerator to verion 2.3.12 which includes a fix to
always use UTF-8 encoding instead of the system's default encoding

Author: ap0llo

src/MdDocs.ApiReference.Pages/Grynwald.MdDocs.ApiReference.Pages.csproj

@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Grynwald.MarkdownGenerator" Version="2.3.11" />
+    <PackageReference Include="Grynwald.MarkdownGenerator" Version="2.3.12" />
     <PackageReference Include="Grynwald.Utilities" Version="1.5.6-pre" />
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="2.2.0" />
     <PackageReference Include="Mono.Cecil" Version="0.11.0" />

src/MdDocs.CommandLineHelp/Grynwald.MdDocs.CommandLineHelp.csproj

@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Grynwald.MarkdownGenerator" Version="2.3.11" />
+    <PackageReference Include="Grynwald.MarkdownGenerator" Version="2.3.12" />
     <PackageReference Include="Grynwald.Utilities" Version="1.5.6-pre" />
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="2.2.0" />
     <PackageReference Include="Mono.Cecil" Version="0.11.0" />

src/MdDocs.Common/Grynwald.MdDocs.Common.csproj

@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Grynwald.MarkdownGenerator" Version="2.3.11" />
+    <PackageReference Include="Grynwald.MarkdownGenerator" Version="2.3.12" />
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="2.2.0" />
     <PackageReference Include="Mono.Cecil" Version="0.11.0" />
   </ItemGroup>