www/tgpt: Update 2.10.1 => 2.11.0

Changelog:
https://github.com/aandrew-me/tgpt/releases/tag/v2.11.0

While here, don't specify a go version since go is backwards compatible
and tgpt had been switched to use of go 1.24. Updated pkg-descr to
match with new providers information file on upstream.

PR: 288711