package/libnss: bump to version 3.68

libnss 3.68 requires libnspr 4.32.

Release Notes (not yet available, but should eventually land):
https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.68_release_notes

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/libnss/libnss.hash

@@ -1,4 +1,4 @@
-# From https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_65_RTM/src/SHA256SUMS
-sha256  32170f6c188212a78bf9fdacffa2eeed0d564ef8faae63fd8ae971b208e8c637  nss-3.65.tar.gz
+# From https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_68_RTM/src/SHA256SUMS
+sha256  c402b32cac83034ec1c3d826ef4306cd14a066d7d9a6f4c30d82b3bc043c725b  nss-3.68.tar.gz
 # Locally calculated
 sha256  a20c1a32d1f8102432360b42e932869f7c11c7cdbacf9cac554c422132af47f4  nss/COPYING

package/libnss/libnss.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBNSS_VERSION = 3.65
+LIBNSS_VERSION = 3.68
 LIBNSS_SOURCE = nss-$(LIBNSS_VERSION).tar.gz
 LIBNSS_SITE = https://ftp.mozilla.org/pub/mozilla.org/security/nss/releases/NSS_$(subst .,_,$(LIBNSS_VERSION))_RTM/src
 LIBNSS_DISTDIR = dist