Update cloudflare/cloudflare requirement from ~> 3.0.0 to ~> 4.26.0

Updates the requirements on [cloudflare/cloudflare](https://github.com/cloudflare/terraform-provider-cloudflare) to permit the latest version.
- [Release notes](https://github.com/cloudflare/terraform-provider-cloudflare/releases)
- [Changelog](https://github.com/cloudflare/terraform-provider-cloudflare/blob/master/CHANGELOG.md)
- [Commits](cloudflare/terraform-provider-cloudflare@v3.0.0...v4.26.0)

---
updated-dependencies:
- dependency-name: cloudflare/cloudflare
  dependency-type: direct:production
...

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

versions.tf

@@ -5,7 +5,7 @@ terraform {
     }
     cloudflare = {
       source  = "cloudflare/cloudflare"
-      version = "~> 3.0.0"
+      version = "~> 4.26.0"
     }
     random = {
       source = "hashicorp/random"