Tidy dependent modules to reflect `github.com/stretchr/testify` bump #1729

Job	Run time
run-determination	2s
check-outdated (./)	21s
check-errors (ruledocsgen)	45s
check-errors (docsgen)	45s
check-style (./)	24s
check-outdated (ruledocsgen)	16s
check-style (ruledocsgen)	25s
check-style (docsgen)	26s
check-errors (./)	42s
check-outdated (docsgen)	16s
check-formatting (./)	15s
check-formatting (ruledocsgen)	21s
check-config (docsgen)	22s
check-config (./)	20s
check-config (ruledocsgen)	24s
check-formatting (docsgen)	15s
	6m 19s

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