RDKEMW-10689: Update networkmanager-plugin version to 0.20.6 (#2226)

Author: DevikaJaladi

conf/include/generic-pkgrev.inc

@@ -292,7 +292,7 @@ PV:pn-memcr = "1.0.2"
 PR:pn-memcr = "r0"
 PACKAGE_ARCH:pn-memcr = "${MIDDLEWARE_ARCH}"
 
-PV:pn-networkmanager-plugin = "0.20.2"
+PV:pn-networkmanager-plugin = "0.20.6"
 PR:pn-networkmanager-plugin = "r0"
 PACKAGE_ARCH:pn-networkmanager-plugin = "${MIDDLEWARE_ARCH}"