Pull request project-chip#1527: Updating wifi_sdk to v3.1.3

Merge in WMN_TOOLS/matter from feature/updating_wifisdk_to_v3.1.3 to RC_2.3.0-1.3

Squashed commit of the following:

commit 1c75b7c32e2268b340288823c741cc7040b5b6ab
Author: Arun Padakanti <arunkumar.padakanti@silabs.com>
Date:   Thu Feb 1 09:42:36 2024 +0530

    Updated gitmodules as per comments

commit 868b100c9bdba2c0e609a6f705d669f16ae4af13
Author: Arun Padakanti <arunkumar.padakanti@silabs.com>
Date:   Wed Jan 31 20:34:59 2024 +0530

    Updating wifi_sdk to v3.1.3

.gitmodules

@@ -249,7 +249,7 @@
 [submodule "third_party/silabs/wifi_sdk"]
 	path = third_party/silabs/wifi_sdk
 	url = https://github.com/SiliconLabs/wiseconnect.git
-	branch = v3.1.1
+	branch = v3.1.3
 	platforms = silabs
 [submodule "editline"]
 	path = third_party/editline/repo