.gitmodules: change android openssl remote to github.com/KDAB/android_openssl:

It was pointing to an Auterion repo before. This
Auterion repo didn't have any modification over
the original, it has been like that for 3 years,
so it makes sense to just point to the original one

.gitmodules

@@ -6,7 +6,7 @@
 	url = https://github.com/mavlink/c_library_v2.git
 [submodule "libs/OpenSSL/android_openssl"]
 	path = libs/OpenSSL/android_openssl
-	url = https://github.com/Auterion/android_openssl
+	url = https://github.com/KDAB/android_openssl
 [submodule "libs/qmlglsink/gst-plugins-good"]
 	path = libs/qmlglsink/gst-plugins-good
 	url = https://github.com/mavlink/gst-plugins-good.git