www/py-lektor: fix "3.2.2_1 fails to run: Requirement.parse"

• visit upstream again to sync depends;
  • github.com/lektor/lektor/blob/v3.2.2/setup.py
• while here, properly sort out RUN_DEPENDS.

Reported by: p5B2E9A8F % t-online.de
PR: 259426
Sponsored by: TorBSD Diversity Project (TDP)
Sponsored by: The Tor Project