Update README.md

Author: mehmetozkaya

README.md

@@ -1,23 +1,23 @@
 ## Udemy Courses Special Discounts
 
-**Active Coupon : JULY24**
+**Active Coupon : APRI25**
 
 ### AWS Serverless
-* [AWS Serverless Microservices with Patterns & Best Practices](https://www.udemy.com/course/aws-serverless-microservices-lambda-eventbridge-sqs-apigateway/?couponCode=JULY24)
+* [AWS Serverless Microservices with Patterns & Best Practices](https://www.udemy.com/course/aws-serverless-microservices-lambda-eventbridge-sqs-apigateway/?couponCode=APRI25)
   * [Medium Article Series](https://medium.com/aws-serverless-microservices-with-patterns-best)
   * [Github Repository](https://github.com/awsrun/aws-microservices)
 
 ### Software Architecture
-* [Design Microservices Architecture with Patterns & Principles](https://www.udemy.com/course/design-microservices-architecture-with-patterns-principles/?couponCode=JULY24)
+* [Design Microservices Architecture with Patterns & Principles](https://www.udemy.com/course/design-microservices-architecture-with-patterns-principles/?couponCode=APRI25)
   * [Medium Article Series](https://medium.com/design-microservices-architecture-with-patterns)
   * [Github Repository](https://github.com/mehmetozkaya/Design-Microservices-Architecture-with-Patterns-Principles)
 
 ### .Net Microservices
-* [Microservices Architecture and Implementation on .NET 5](https://www.udemy.com/course/microservices-architecture-and-implementation-on-dotnet/?couponCode=JULY24)
+* [Microservices Architecture and Implementation on .NET 5](https://www.udemy.com/course/microservices-architecture-and-implementation-on-dotnet/?couponCode=APRI25)
   * [Medium Article Series](https://medium.com/aspnetrun)
   * [Github Repository](https://github.com/aspnetrun/run-aspnetcore-microservices)
-* [Deploying .Net Microservices with K8s, AKS and Azure DevOps](https://www.udemy.com/course/deploying-net-microservices-with-k8s-aks-and-azure-devops/?couponCode=JULY24)
-* [Secure .Net Microservices with IdentityServer4 OAuth2,OpenID](https://www.udemy.com/course/secure-net-microservices-with-identityserver4-oauth2openid/?couponCode=JULY24)
+* [Deploying .Net Microservices with K8s, AKS and Azure DevOps](https://www.udemy.com/course/deploying-net-microservices-with-k8s-aks-and-azure-devops/?couponCode=APRI25)
+* [Secure .Net Microservices with IdentityServer4 OAuth2,OpenID](https://www.udemy.com/course/secure-net-microservices-with-identityserver4-oauth2openid/?couponCode=APRI25)
 * [Microservices Observability, Resilience, Monitoring on .Net](https://www.udemy.com/course/microservices-observability-resilience-monitoring-on-net/?referralCode=D162C050483C75452136)
 * [Using gRPC in Microservices Communication with .Net 5](https://www.udemy.com/course/using-grpc-in-microservices-communication-with-net-5/?couponCode=MARCH22)