Update module rs/cors to v1

This MR contains the following updates:

Package	Type	Update	Change
github.com/rs/cors	require	major	v0.0.0-20190613161432-33ffc0734c60 -> v1.7.0

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Release Notes

rs/cors

v1.7.0

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v1.6.0

Compare Source

v1.5.0

Compare Source

v1.4.0

Compare Source

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