chore: update version to 0.4.0 in changelog and project files

Author: nadeem-cs

CHANGELOG.md

@@ -1,4 +1,12 @@
 # Changelog
+## [v0.4.0](https://github.com/contentstack/contentstack-management-dotnet/tree/v0.4.0)
+ - Feat
+   - **MFA Support**: Added Multi-Factor Authentication (MFA) support for login operations
+     - Added `mfaSecret` parameter to `Login` and `LoginAsync` methods for TOTP generation
+     - Automatic TOTP token generation from Base32-encoded MFA secrets using Otp.NET library
+     - Comprehensive test coverage for MFA functionality including unit and integration tests
+     - Supports both explicit token and MFA secret-based authentication flows
+
 ## [v0.3.2](https://github.com/contentstack/contentstack-management-dotnet/tree/v0.3.2)
  - Fix
    - Added Test cases for the Release

Contentstack.Management.Core/contentstack.management.core.csproj

@@ -11,7 +11,6 @@
     <PackageLicenseFile>LICENSE.txt</PackageLicenseFile>
     <PackageProjectUrl>https://github.com/contentstack/contentstack-management-dotnet</PackageProjectUrl>
     <PackageReadmeFile>README.md</PackageReadmeFile>
-    <PackageReleaseNotes>ContentType query issue resolved</PackageReleaseNotes>
     <PackageTags>Contentstack management API </PackageTags>
     <PackageVersion>$(Version)</PackageVersion>
     <ReleaseVersion>$(Version)</ReleaseVersion>

Directory.Build.props

@@ -1,5 +1,5 @@
 <Project>
   <PropertyGroup>
-    <Version>0.3.2</Version>
+    <Version>0.4.0</Version>
   </PropertyGroup>
 </Project>