Update openmaptiles/postgis to use PostGIS 2.4.8
Update openmaptiles/postgis to use PostGIS 2.4.8

Apply fix described in https://github.com/openmaptiles/openmaptiles-tools/pull/166

QwantResearch/kartotherian_docker,QwantResearch/kartotherian_docker,QwantResearch/kartotherian_docker