[OAS/CI] Do not retry validation failures (#241118)

## Summary

Per the title

Author: jloleysens

.buildkite/scripts/steps/checks/capture_oas_snapshot.sh

@@ -31,11 +31,12 @@ fi
 
 run_check() {
   eval "$cmd"
-  node ./scripts/validate_oas_docs.js --assert-no-error-increase --skip-printing-issues --update-baseline
 }
 
 retry 5 15 run_check
 
+node ./scripts/validate_oas_docs.js --assert-no-error-increase --skip-printing-issues --update-baseline
+
 check_for_changed_files "$cmd" true
 
 .buildkite/scripts/steps/openapi_bundling/security_solution_openapi_bundling.sh