flask-debug-3933: update to set debug explicitly to False

CHANGELOG.md

@@ -6,7 +6,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## Unreleased
-
+- Do not execute Flask Tests in debug mode
+  ([#3956](https://github.com/open-telemetry/opentelemetry-python/pull/3956))
 - Add Python 3.12 to tox
   ([#3616](https://github.com/open-telemetry/opentelemetry-python/pull/3616))
 

tests/w3c_tracecontext_validation_server.py

@@ -70,6 +70,6 @@ def verify_tracecontext():
 
 if __name__ == "__main__":
     try:
-        app.run(debug=True)
+        app.run(debug=False)
     finally:
         span_processor.shutdown()