Chore [deps:terraform]: update DataDog/datadog requirement from ~> 3.50.0 to ~> 3.57.0

Updates the requirements on [DataDog/datadog](https://github.com/DataDog/terraform-provider-datadog) to permit the latest version.
- [Release notes](https://github.com/DataDog/terraform-provider-datadog/releases)
- [Changelog](https://github.com/DataDog/terraform-provider-datadog/blob/master/CHANGELOG.md)
- [Commits](DataDog/terraform-provider-datadog@v3.50.0...v3.57.0)

---
updated-dependencies:
- dependency-name: DataDog/datadog
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

terraform/main.tf

@@ -8,7 +8,7 @@ terraform {
     }
     datadog = {
       source  = "DataDog/datadog"
-      version = "~> 3.50.0"
+      version = "~> 3.57.0"
     }
   }