Depend explicitly on the challenge to prevent

some errors like
```
"registry.terraform.io/cloudflare/cloudflare" produced an invalid new value
for .ownership_challenge: was null, but now cty.StringVal("[redacted]..[redacted]")
```

As recommended by @jacobbednarz in
cloudflare#2752 (comment)

Workaround for issue like
cloudflare#2794
cloudflare#2752
cloudflare#3001

examples/resources/cloudflare_logpush_job/resource.tf

@@ -45,6 +45,9 @@ data "aws_s3_bucket_object" "challenge_file" {
 }
 
 resource "cloudflare_logpush_job" "example_job" {
+  depends_on = [
+    cloudflare_logpush_ownership_challenge.ownership_challenge, data.aws_s3_bucket_object.challenge_file
+  ]
   enabled             = true
   zone_id             = "0da42c8d2132a9ddaf714f9e7c920711"
   name                = "My-logpush-job"