ftp/curl: Update to 7.86.0

While here,

• Switch to DISTVERSION.
• Pet portlint and portclippy.
• Tidy up Makefile with portfmt.

ChangeLog: https://curl.se/changes.html#7_86_0
PR: 267802
Approved by: maintainer timeout
MFH: 2022Q4
Security: 0f99a30c-7b4b-11ed-9168-080027f5fec9