www/hs-postgrest: Update 13.0.6 => 13.0.7

Changelogs:

• https://github.com/PostgREST/postgrest/releases/tag/v13.0.7
• https://github.com/PostgREST/postgrest/compare/v13.0.6...v13.0.7

Approved by: yuri@ (Mentor)

Differential Revision: https://reviews.freebsd.org/D52548