Improve panic attribution logic in Flakeguard test runner #119

Job	Run time
lint (framework)	2m 4s
lint (parrot)	1m 45s
lint (wasp)	4m 9s
lint (seth)	2m 35s
lint (havoc)	2m 43s
lint (k8s-test-runner)	2m 37s
lint (lib)	3m 44s
lint (tools/workflowresultparser)	1m 23s
lint (tools/asciitable)	1m 30s
lint (tools/ghlatestreleasechecker)	1m 25s
lint (tools/testlistgenerator)	1m 30s
lint (tools/ecrimagefetcher)	1m 44s
lint (tools/gotestloghelper)	1m 44s
	28m 53s

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