esp32: update wifi lib to fix wifi crash bug

Fix a wifi crash bug which happens in throughput test

diff --git a/components/esp32/lib b/components/esp32/lib
index 8047d46d83d7fff8f66780d5705c7fa49d38cb94..162d1891adfb0b138ef8dfbdef11c9912e12f259 160000 (submodule)
--- a/components/esp32/lib
+++ b/components/esp32/lib
@@ -1 +1 @@
-Subproject commit 8047d46d83d7fff8f66780d5705c7fa49d38cb94
+Subproject commit 162d1891adfb0b138ef8dfbdef11c9912e12f259