package/rtl8723bu: fix module installation

At the moment module is build but not installed to target/. To fix this
let's bump package to 2023-02-18 version on master branch to fix module
installation.

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/rtl8723bu/rtl8723bu.hash

@@ -1,2 +1,2 @@
 # Locally computed
-sha256  21372b654886c6d100f46636d7807428698bd618e00db1b8b49cfc3037e46d10  rtl8723bu-f1dbe1c8ccc2c5b2cbeb84da6b9f0e547a84a255.tar.gz
+sha256  d0db523f256795d8f3284fa2ec03855f231747ede8337e878bc096325b965654  rtl8723bu-92c19318cb54ef96c2cfb4a22b2c98eb512812d8.tar.gz

package/rtl8723bu/rtl8723bu.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-RTL8723BU_VERSION = f1dbe1c8ccc2c5b2cbeb84da6b9f0e547a84a255
+RTL8723BU_VERSION = 92c19318cb54ef96c2cfb4a22b2c98eb512812d8
 RTL8723BU_SITE = $(call github,lwfinger,rtl8723bu,$(RTL8723BU_VERSION))
 RTL8723BU_LICENSE = GPL-2.0, proprietary (*.bin firmware blobs)