Update syntax-highlight to latest version

Julien LepillerWed Aug 25 00:16:23+0300 2021

73e93db

gitile/LICENSES
namelast commitdate
AGPL-3.0-or-later.txtLicense with reuse.software, code is under AGPL, not LGPLSun Mar 21 20:00:42+0300 2021
CC0-1.0.txtLicense with reuse.software, code is under AGPL, not LGPLSun Mar 21 20:00:42+0300 2021
GPL-3.0-or-later.txtLicense with reuse.software, code is under AGPL, not LGPLSun Mar 21 20:00:42+0300 2021