nss: update to version 3.55 (security fix)

Fixes
CVE-2020-12403
CVE-2020-12401
CVE-2020-6829
CVE-2020-12400

Signed-off-by: Jan Pavlinec <jan.pavlinec@nic.cz>

libs/nss/Makefile

@@ -7,14 +7,14 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=nss
-PKG_VERSION:=3.53
+PKG_VERSION:=3.55
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:= \
     https://download.cdn.mozilla.net/pub/security/$(PKG_NAME)/releases/NSS_$(subst .,_,$(PKG_VERSION))_RTM/src \
     https://archive.mozilla.org/pub/security/$(PKG_NAME)/releases/NSS_$(subst .,_,$(PKG_VERSION))_RTM/src
-PKG_HASH:=08d36dc1a56325f02e626626d4eeab9c4d126dbd99dfaf419b91d0a696f58917
+PKG_HASH:=fc692e3db45a082ee6328cd989e795c171a00df9c518df090937f7604f850004
 
 PKG_MAINTAINER:=Lucian Cristian <lucian.cristian@gmail.com>
 PKG_LICENCE:=MPL-2.0