chore: update action pin to v0.4.3

[lhoupert]

Automated update of lhoupert/action-python-security-auditing pin to v0.4.3.

[github-actions]

❌ Some test workflows did not match expectations

8 passed, 6 failed

Test	Name	Expected	Actual	Bandit	pip-audit	Result
01	requirements · flat · clean	success	success	—	—	✅
02	requirements · src/ · bandit HIGH	failure	failure	B105, B404, B602	—	✅
03	requirements · src/+scripts/ · bandit HIGH + pip-audit	failure	failure	B105, B404, B602	—	❌
04	uv · flat · clean	success	success	—	—	✅
05	uv · src/ · pip-audit vuln	failure	success	—	—	❌
06	uv · src/+scripts/ · bandit MEDIUM	failure	failure	B324, B506	—	❌
07	poetry · flat · clean	success	success	—	—	✅
08	poetry · src/ · bandit MEDIUM + pip-audit	failure	failure	B105, B324	—	❌
09	pipenv · flat · clean	success	success	—	—	✅
10	pipenv · src/+scripts/ · bandit HIGH	failure	failure	B404, B602	—	✅
11	requirements · flat · clean (root working dir)	success	failure	—	flask	❌
12	uv · flat · bandit-only (no pip-audit)	failure	failure	B404, B602	disabled	✅
13	requirements · flat · unfixable vulns (should pass)	success	success	—	—	❌
14	uv · flat · low threshold (B101 assert)	failure	failure	B101	disabled	✅

Error details

Test 03 — requirements · src/+scripts/ · bandit HIGH + pip-audit

• pip-audit: expected vuln for requests not found
• pip-audit: expected vuln for Pillow not found

Test 05 — uv · src/ · pip-audit vuln

• Conclusion: expected failure, got success
• pip-audit: expected vuln for requests not found

Test 06 — uv · src/+scripts/ · bandit MEDIUM

• Bandit: expected B303 not found in results

Test 08 — poetry · src/ · bandit MEDIUM + pip-audit

• Bandit: expected B303 not found in results
• pip-audit: expected vuln for cryptography not found
• pip-audit: expected vuln for requests not found

Test 11 — requirements · flat · clean (root working dir)

• Conclusion: expected success, got failure
• pip-audit: expected no vulns, got 1 (flask)

Test 13 — requirements · flat · unfixable vulns (should pass)

• pip-audit: expected vuln for pygments not found