cmake: Use topic/workspace jrl-cmakemodules

.gitmodules

 [submodule "cmake"]
 	path = cmake
-	url = https://github.com/jrl-umi3218/jrl-cmakemodules.git
+	url = https://github.com/jorisv/jrl-cmakemodules.git
 [submodule "third-parties/qhull"]
 	path = third-parties/qhull
 	url = https://github.com/qhull/qhull.git

cmake @ b03972c2

-Subproject commit baf48a3ecb96f8dcad616aec006d43cce3307e19
+Subproject commit b03972c2aab5d4ed63bc7cc596d29328f388ef83