Fix: Update Springdoc version to 2.7.0 to resolve Swagger UI crash on Spring Boot 3.5.x

[Joyabrata001]

Problem:
When accessing Swagger UI, the project crashes with the following error:

Handler dispatch failed: java.lang.NoSuchMethodError: 'void org.springframework.web.method.ControllerAdviceBean.<init>(java.lang.Object)'

Reason: Version incompatibility between springdoc-openapi-starter-webmvc-ui:2.6.0 and Spring Boot 3.5.x

Solution: Updated springdoc-openapi-starter-webmvc-ui to 2.7.0

Verification:

• Ran the app locally: ./mvnw spring-boot:run
• Accessed Swagger UI: http://localhost:8080/swagger-ui/index.html
• Verified endpoints working

Hacktoberfest Note:
I am a newbie contributing for the first time. Apologies for any mistakes.