Use same lemon subproject path as the Meson branch

Author: Coloquinte

.gitmodules

@@ -1,6 +1,6 @@
 [submodule "thirdparty/pybind11/pybind11"]
 	path = thirdparty/pybind11/pybind11
 	url = https://github.com/pybind/pybind11.git
-[submodule "subprojects/lemon-1.3.1"]
-	path = subprojects/lemon-1.3.1
+[submodule "subprojects/lemon"]
+	path = subprojects/lemon
 	url = https://github.com/Coloquinte/lemon

meson.build

@@ -15,7 +15,7 @@ thread_dep = dependency('threads', required: true)
 cmake =import('cmake')
 cmake_opts = cmake.subproject_options()
 cmake_opts.add_cmake_defines({'CMAKE_POSITION_INDEPENDENT_CODE': true})
-lemon = cmake.subproject('lemon-1.3.1', options: cmake_opts)
+lemon = cmake.subproject('lemon', options: cmake_opts)
 lemon_dep = lemon.dependency('lemon')
 
 sources = [