Bump github.com/spf13/pflag from 1.0.7 to 1.0.9 #1749

Job	Run time
run-determination	2s
check-outdated (ruledocsgen)	21s
check-outdated (docsgen)	27s
check-outdated (./)	23s
check-style (./)	27s
check-errors (./)	49s
check-style (ruledocsgen)	31s
check-style (docsgen)	28s
check-formatting (docsgen)	23s
check-formatting (./)	23s
check-config (./)	27s
check-formatting (ruledocsgen)	19s
check-errors (docsgen)	31s
check-config (docsgen)	21s
check-errors (ruledocsgen)	23s
check-config (ruledocsgen)	24s
	6m 39s

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