Fix variable usage impacting schema build performance (#4910)

(cherry picked from commit bbdde20)

Author: shashank-elastic

detection_rules/integrations.py

@@ -113,8 +113,6 @@ def write_manifests(integrations: dict[str, Any]) -> None:
 def build_integrations_schemas(overwrite: bool, integration: str | None = None) -> None:
     """Builds a new local copy of integration-schemas.json.gz from EPR integrations."""
 
-    saved_integration_schemas = {}
-
     # Check if the file already exists and handle accordingly
     if overwrite and SCHEMA_FILE_PATH.exists():
         SCHEMA_FILE_PATH.unlink()
@@ -139,7 +137,7 @@ def build_integrations_schemas(overwrite: bool, integration: str | None = None)
         print(f"processing {package}")
         final_integration_schemas.setdefault(package, {})  # type: ignore[reportUnknownMemberType]
         for version, manifest in versions.items():
-            if package in saved_integration_schemas and version in saved_integration_schemas[package]:
+            if package in final_integration_schemas and version in final_integration_schemas[package]:
                 continue
 
             # Download the zip file

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "detection_rules"
-version = "1.3.9"
+version = "1.3.10"
 description = "Detection Rules is the home for rules used by Elastic Security. This repository is used for the development, maintenance, testing, validation, and release of rules for Elastic Security’s Detection Engine."
 readme = "README.md"
 requires-python = ">=3.12"