Bring in the libgpiod dependency and update dependencies

Change-Id: Ibd61fe931b30c9006c5fd4835f255ce1b4d67fe1
diff --git a/.gitmodules b/.gitmodules
index 0eaa8cf..ab984e7 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,7 +1,7 @@
 [submodule "submodules/buildroot"]
 	path = submodules/buildroot
 	url = ../../github/buildroot/buildroot
-	branch = cesnet/cla-7
+	branch = cesnet/cla-10
 [submodule "submodules/cla-sysrepo"]
 	path = submodules/cla-sysrepo
 	url = ../../CzechLight/cla-sysrepo