component/geos: upgrade to latest version.

Upgrades GEOS to the last available version (3.12.2) as a previous
step to upgrade GDAL, which depends on it.

See merge request !1586.

component/geos/buildout.cfg

 [buildout]
+extends =
+  ../cmake/buildout.cfg
+
 parts =
   geos
 
 [geos]
 recipe = slapos.recipe.cmmi
-version = 3.4.2
+shared = true
+version = 3.12.2
 url = http://download.osgeo.org/geos/geos-${:version}.tar.bz2
-md5sum = fc5df2d926eb7e67f988a43a92683bae
+md5sum = f451aa3884f2ca19ae555f5c7d8de4f8
+location = @@LOCATION@@
+configure-command = ${cmake:location}/bin/cmake
 configure-options =
-  --disable-dependency-tracking
-  --disable-static
+  -DCMAKE_BUILD_TYPE=Release
+  -DCMAKE_INSTALL_PREFIX=@@LOCATION@@
+  -DCMAKE_INSTALL_LIBDIR=lib
+  -DCMAKE_INSTALL_RPATH=${:location}/lib