fix(aws): resolve the region matrix output path from the script location

write_regions_by_service() built its destination from os.path.realpath(__name__).
__name__ is the module name, "__main__", not a path, so the path was resolved
against the current working directory. It happened to be right only because the
workflow runs the script from the repository root; an invocation from anywhere
else wrote the matrix under <cwd>/prowler/ instead of the checkout. It is now
resolved from __file__, so the destination follows the script.

The changelog fragments are also shortened, and the one covering the regional
clients is split in two so each entry describes a single change.

Author: StylusFrost

prowler/changelog.d/aws-iso-partitions.added.md

@@ -1 +1 @@
-AWS ISO partitions (`aws-iso`, `aws-iso-b`, `aws-iso-e` and `aws-iso-f`) to the AWS service/region matrix, sourced from the endpoints data bundled with botocore, so services are now scanned in the ISO partitions instead of being silently skipped
+AWS ISO partitions (`aws-iso`, `aws-iso-b`, `aws-iso-e` and `aws-iso-f`) to the AWS service region matrix, generated from the endpoints data bundled with botocore

prowler/changelog.d/aws-iso-partitions.fixed.md

@@ -1 +1 @@
-`get_global_region()` now returns a real region for the ISO partitions (`us-iso-east-1`, `us-isob-east-1`, `eu-isoe-west-1`, `us-isof-east-1`) instead of the `aws-iso-global` pseudo endpoint, which also collapsed the four ISO partitions into one
+`AwsProvider.get_global_region()` now returns a real region for each ISO partition instead of the `aws-iso-global` pseudo endpoint, which collapsed the four partitions into one answer

prowler/changelog.d/aws-regional-clients-empty-dict.fixed.md

@@ -1 +1 @@
-`AwsProvider.generate_regional_clients()` returns an empty dict instead of `None` when the regional clients cannot be built, and `AwsProvider.get_available_aws_service_regions()` returns an empty set for an unknown service or partition instead of raising, so a service unavailable in the audited partition is skipped rather than raising `AttributeError: 'NoneType' object has no attribute 'values'`
+`AwsProvider.generate_regional_clients()` now returns an empty dict instead of `None` when the regional clients cannot be built, a failure that surfaced later as `AttributeError: 'NoneType' object has no attribute 'values'`

prowler/changelog.d/aws-service-regions-unknown-partition.fixed.md

@@ -0,0 +1 @@
+`AwsProvider.get_available_aws_service_regions()` now returns an empty set for an unknown service or partition instead of raising `KeyError`, so a service unavailable in the audited partition is skipped

util/update_aws_services_regions.py

@@ -278,7 +278,10 @@ def add_iso_partitions_regions(regions_by_service: dict) -> None:
 
 def write_regions_by_service(regions_by_service: dict) -> None:
     """Write the AWS regions matrix to the file read by the AWS provider."""
-    parsed_matrix_regions_aws = f"{os.path.dirname(os.path.realpath(__name__))}/prowler/providers/aws/aws_regions_by_service.json"
+    repository_root = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
+    parsed_matrix_regions_aws = (
+        f"{repository_root}/prowler/providers/aws/aws_regions_by_service.json"
+    )
     logging.info(f"Writing {parsed_matrix_regions_aws}")
     with open(parsed_matrix_regions_aws, "w") as outfile:
         json.dump(regions_by_service, outfile, indent=2, sort_keys=True)