esp32/lib: update wifi lib to a1e5f8b9

1. update smartconfig 2.6.2;
2. add watch dog
3. remove libwpa2.a/libwps.a

diff --git a/components/esp32/lib b/components/esp32/lib
index 3853d7ae3dd455492ff4ed663662d42d28c817e4..a1e5f8b953c7934677ba7a6ed0a6dd2da0e6bd0f 160000 (submodule)
--- a/components/esp32/lib
+++ b/components/esp32/lib
@@ -1 +1 @@
-Subproject commit 3853d7ae3dd455492ff4ed663662d42d28c817e4
+Subproject commit a1e5f8b953c7934677ba7a6ed0a6dd2da0e6bd0f