Update the geometry predicate for OSM

So far, the predicate for obtaining the WKT of a geometry was
geo:hasGeometry. Since a few weeks, in the TTLs provided on
https:/osm2rdf.cs.uni-freiburg.de use the standard-conform (but more
clumsy) geo:hasGeometry in combination with geo:asWKT.

src/qlever-petrimaps/GeomCache.cpp

@@ -28,14 +28,14 @@ using util::geo::latLngToWebMerc;
 const static std::string QUERY =
     "PREFIX geo: <http://www.opengis.net/ont/geosparql#> "
     "SELECT DISTINCT ?geometry WHERE {"
-    " ?osm_id geo:hasGeometry ?geometry "
+    " ?osm_id geo:hasGeometry/geo:asWKT ?geometry "
     " } INTERNAL SORT BY ?geometry";
 
 const static std::string COUNT_QUERY =
     "PREFIX geo: <http://www.opengis.net/ont/geosparql#> "
     "SELECT (COUNT(?geometry) as ?count) WHERE { "
     "SELECT DISTINCT ?geometry WHERE {"
-    " ?osm_id geo:hasGeometry ?geometry "
+    " ?osm_id geo:hasGeometry/geo:asWKT ?geometry "
     "} INTERNAL SORT BY ?geometry }";
 
 const static std::string QUERY_WD =