Bump github.com/spf13/pflag from 1.0.6 to 1.0.7 #1678

Job	Run time
run-determination	2s
check-outdated (docsgen)	14s
check-outdated (./)	21s
check-formatting (./)	20s
check-formatting (docsgen)	20s
check-outdated (ruledocsgen)	14s
check-formatting (ruledocsgen)	21s
check-style (ruledocsgen)	29s
check-errors (docsgen)	45s
check-style (docsgen)	24s
check-errors (ruledocsgen)	44s
check-errors (./)	47s
check-style (./)	25s
check-config (docsgen)	25s
check-config (ruledocsgen)	19s
check-config (./)	19s
	6m 29s

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