KeyError when FixedVersion is absent in Trivy JSON

[denniebouman]

Describe the bug
KeyError when FixedVersion is absent in Trivy JSON

To Reproduce
Steps to reproduce the behaviour:

1. Metric Type: Security Warnings with Trivy JSON as Source
2. Configure Trivy JSON file with absent FixedVersion

Expected behaviour
Vulnerabilities / Security Warnings (if present) are shown

Screenshots
Parse error Traceback (most recent call last): File "/home/collector/base_collectors/source_collector.py", line 148, in __safely_parse_source_responses return await self._parse_source_responses(responses) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/collector/base_collectors/source_collector.py", line 161, in _parse_source_responses included_entities = [entity for entity in await self._parse_entities(responses) if self._include_entity(entity)] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/collector/base_collectors/file_source_collector.py", line 113, in _parse_entities entities.extend(self._parse_json(json, filename)) ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^ File "/home/collector/source_collectors/trivy/security_warnings.py", line 83, in _parse_json fixed_version=vulnerability["FixedVersion"], ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^ KeyError: 'FixedVersion'

Your environment (please complete the following information):

• Browser: Chrome
• Quality-time version: v5.21.0