zsh: use git urls for submodules

shelhamer · shelhamer · commit a4b576f4ca0d · 2018-08-15T10:16:37.000-07:00
for systems without http/https traffic
diff --git a/.zprezto b/.zprezto
@@ -1 +1 @@
-Subproject commit 8886a4a16c96184b6fda294cef7637635b9e149f
+Subproject commit 4059c475b98cc4949f3278cd86669baaf40e9fbe
