chore: Change subrepo from ssh to https

Tobias Michalski · Tobias Michalski · commit 429e219d5b0a · 2022-08-15T10:42:09.000+02:00
diff --git a/.gitmodules b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "tests/cti"]
 	path = tests/cti
-	url = git@github.com:mitre/cti.git
+	url = https://github.com/mitre/cti.git
