dev-haskell/parsers: bump up to 0.12.1

Package-Manager: portage-2.2.10_p40
dev-haskell/trifecta: bump up to 1.5.1

Package-Manager: portage-2.2.10_p40
dev-lang/idris: allow parsers-0.12

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>