fix(report): correct csv_path indentation in write_vulnerabilities

Line 72 was over-indented, causing an IndentationError on import of
strix/report/writer.py and breaking main. Also bump the mirrors-mypy
pre-commit hook to v1.17.1 to avoid the mypy 1.16.0 internal crash
(python/mypy#19412) on openai/_client.py.

Co-Authored-By: Alex Schapiro <bearsyankees@gmail.com>

.pre-commit-config.yaml

@@ -11,7 +11,7 @@ repos:
 
   # MyPy for static type checking
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v1.16.0
+    rev: v1.17.1
     hooks:
       - id: mypy
         additional_dependencies: [