style: format code with Black and isort

This commit fixes the style issues introduced in 0d91d4e according to the output
from Black and isort.

Details: #35

sarif-parser/src/sarif_parser/__init__.py

@@ -1,4 +1,5 @@
 """sarif-parser - Parse SARIF reports and covert them to DeepSource issues."""
+
 from __future__ import annotations
 
 import hashlib