fix: dbsecretsmanager generates a bunch of logs (#5426)

Author: diegovb-sys

keep/secretmanager/dbsecretmanager.py

@@ -26,14 +26,14 @@ def read_secret(self, secret_name: str, is_json: bool = False) -> str | dict:
                     if is_json:
                         return json.loads(secret_model.value)
                     return secret_model.value
-                else:
-                    raise KeyError(f"Secret {secret_name} not found")
             except Exception as e:    
                 self.logger.error(
                     "Failed to read secret",
                     extra={"error": str(e)},
                 )
                 raise
+            if not secret_model:
+                raise KeyError(f"Secret {secret_name} not found")
 
 
     def write_secret(self, secret_name: str, secret_value: str) -> None: