ARROW-8915: [Dev][Archery] Require Click 7
ARROW-8915: [Dev][Archery] Require Click 7

The case_sensitive option requires Click 7 or later.

Closes #7257 from kou/dev-archery-require-click-7

Authored-by: Sutou Kouhei <73218711cdd5d5c30ac66da3cc4d9d9204caf34b@clear-code.com>
Signed-off-by: Wes McKinney <3be70eed0275ec2606f002bff3514252e145d204@apache.org>

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