Update package versions for Edi.Captcha and Edi.ImageWatermark

Updated `Edi.Captcha` from version `3.26.0` to `3.26.1` in `Moonglade.Comments.csproj`.
Updated `Edi.ImageWatermark` from version `2.18.0` to `2.18.1` in `Moonglade.Web.csproj`.

Author: EdiWang

src/Moonglade.Comments/Moonglade.Comments.csproj

@@ -9,7 +9,7 @@
         <ImplicitUsings>enable</ImplicitUsings>
     </PropertyGroup>
     <ItemGroup>
-        <PackageReference Include="Edi.Captcha" Version="3.26.0" />
+        <PackageReference Include="Edi.Captcha" Version="3.26.1" />
     </ItemGroup>
     <ItemGroup>
         <ProjectReference Include="..\Moonglade.Configuration\Moonglade.Configuration.csproj" />

src/Moonglade.Web/Moonglade.Web.csproj

@@ -39,7 +39,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Edi.Gravatar" Version="1.2.0" />
-    <PackageReference Include="Edi.ImageWatermark" Version="2.18.0" />
+    <PackageReference Include="Edi.ImageWatermark" Version="2.18.1" />
     <PackageReference Include="Edi.PasswordGenerator" Version="2.1.0" />
     <PackageReference Include="Microsoft.Extensions.Logging.AzureAppServices" Version="8.0.13" />