old submodule url does not work anylonger

see https://github.blog/2021-09-01-improving-git-protocol-security-github/

Signed-off-by: tobiasKaminsky <tobias@kaminsky.me>

.gitmodules

@@ -1,3 +1,3 @@
 [submodule "src/3rdparty/libcrashreporter-qt"]
 	path = src/3rdparty/libcrashreporter-qt
-	url = git@github.com:dschmidt/libcrashreporter-qt.git
+	url = https://github.com/dschmidt/libcrashreporter-qt.git