[FR] Load ECS mapping based on supplied stack version (#5925)

* Load ECS mapping based on supplied stack version

detection_rules/index_mappings.py

@@ -17,7 +17,6 @@ from elasticsearch.exceptions import BadRequestError
 from semver import Version
 
 from . import ecs, integrations, misc, utils
-from .config import load_current_package_version
 from .esql import EventDataset
 from .esql_errors import (
     EsqlKibanaBaseError,
@@ -511,7 +510,7 @@ def prepare_mappings(  # noqa: PLR0913
         custom_mapping.update({index: index_mapping})
 
     # Load ECS in an index mapping format (nested schema)
-    current_version = Version.parse(load_current_package_version(), optional_minor_and_patch=True)
+    current_version = Version.parse(stack_version, optional_minor_and_patch=True)
     ecs_schema = get_ecs_schema_mappings(current_version)
 
     # Filter combined mappings based on the provided indices

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "detection_rules"
-version = "1.6.14"
+version = "1.6.15"
 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"