feat: upgrade AWS Provider to v6.0.0

- Update required AWS Provider version from >= 5.5.0 to >= 6.0.0
- No breaking changes detected for this module's resources
- Gains enhanced multi-region support and performance improvements

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: vjdhama

modules/route-53-record/versions.tf

@@ -4,7 +4,7 @@ terraform {
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = ">= 5.5.0"
+      version = ">= 6.0.0"
     }
   }
 }

versions.tf

@@ -4,7 +4,7 @@ terraform {
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = ">= 5.5.0"
+      version = ">= 6.0.0"
     }
   }
 }