samples: provisioning: softap: Fix early disconnect

Observing the early disconnection from mobile due to synchronisation
issue between previous connection FIN and new connection RST.
Increase CONFIG_NET_MAX_CONN to 8.

Signed-off-by: Kapil Bhatt <[email protected]>

Author: kapbh

samples/wifi/provisioning/softap/prj.conf

@@ -57,7 +57,7 @@ CONFIG_NET_IPV6=n
 CONFIG_NET_TCP=y
 CONFIG_NET_UDP=y
 CONFIG_NET_SOCKETS=y
-CONFIG_NET_MAX_CONN=6
+CONFIG_NET_MAX_CONN=8
 CONFIG_ZVFS_OPEN_MAX=20
 CONFIG_NET_SOCKETS_TLS_MAX_CONTEXTS=2
 CONFIG_NET_SOCKETS_SOCKOPT_TLS=y