Fix observability.logs.persist being flagged as an unexpected field during the wrangler config file validation (#11019)

Author: dario-piotrowicz

.changeset/common-beans-wink.md

@@ -0,0 +1,5 @@
+---
+"wrangler": patch
+---
+
+Fix `observability.logs.persist` being flagged as an unexpected field during the wrangler config file validation

packages/wrangler/src/config/validation.ts

@@ -4324,6 +4324,7 @@ const validateObservability: ValidatorFn = (diagnostics, field, value) => {
 				"head_sampling_rate",
 				"invocation_logs",
 				"destinations",
+				"persist",
 			]) && isValid;
 	}