Allow TetGen v1 and v2.

Formaly TetGen 1->2 is breaking, in practice we use a part of the API which did not
cange, see Changelog there.

Author: j-fu

Project.toml

@@ -1,7 +1,7 @@
 name = "SimplexGridFactory"
 uuid = "57bfcd06-606e-45d6-baf4-4ba06da0efd5"
 authors = ["Juergen Fuhrmann <[email protected]>"]
-version = "2.2.1"
+version = "2.3.0"
 
 [deps]
 DocStringExtensions = "ffbed154-4ef7-542d-bbb7-c09d3a79fcae"
@@ -24,6 +24,6 @@ FileIO = "1"
 LinearAlgebra = "1.9"
 MeshIO = "0.4"
 Printf = "1.6"
-TetGen = "1.5"
+TetGen = "1.5,2"
 Triangulate = "2.3.1"
 julia = "1.9"