Updating submodules (#303)

Updating submodules with the exception of aws-c-cal. (Blocked until aws-lc is integrated.)

Author: rccarper

crt/aws-c-auth

@@ -14,6 +14,7 @@
 #include <aws/common/clock.h>
 #include <aws/common/string.h>
 #include <aws/http/connection.h>
+#include <aws/http/proxy.h>
 #include <aws/io/tls_channel_handler.h>
 
 /* on 32-bit platforms, casting pointers to longs throws a warning we don't need */

crt/aws-c-common

@@ -21,6 +21,7 @@
 #include <aws/http/connection.h>
 #include <aws/http/connection_manager.h>
 #include <aws/http/http.h>
+#include <aws/http/proxy.h>
 
 /* on 32-bit platforms, casting pointers to longs throws a warning we don't need */
 #if UINTPTR_MAX == 0xffffffff

crt/aws-c-http

@@ -11,6 +11,7 @@
 #include <aws/common/string.h>
 #include <aws/common/thread.h>
 #include <aws/http/connection.h>
+#include <aws/http/proxy.h>
 #include <aws/http/request_response.h>
 #include <aws/io/channel.h>
 #include <aws/io/channel_bootstrap.h>