Update NSPR to 4.12 and NSS to 3.23 on iOS

nss/lib/ckfw/builtins/nssckbi.h

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #ifndef NSSCKBI_H
 #define NSSCKBI_H
 
 /*
  * NSS BUILTINS Version numbers.
  *
  * These are the version numbers for the builtins module packaged with
  * this release on NSS. To determine the version numbers of the builtin
  * module you are using, use the appropriate PKCS #11 calls.
  *
  * These version numbers detail changes to the PKCS #11 interface. They map
  * to the PKCS #11 spec versions.
  */
 #define NSS_BUILTINS_CRYPTOKI_VERSION_MAJOR 2
 #define NSS_BUILTINS_CRYPTOKI_VERSION_MINOR 20
 
-/* These version numbers detail the changes 
+/* These version numbers detail the changes
  * to the list of trusted certificates.
  *
  * The NSS_BUILTINS_LIBRARY_VERSION_MINOR macro needs to be bumped
  * for each NSS minor release AND whenever we change the list of
  * trusted certificates.  10 minor versions are allocated for each
  * NSS 3.x branch as follows, allowing us to change the list of
  * trusted certificates up to 9 times on each branch.
  *   - NSS 3.5 branch:  3-9
  *   - NSS 3.6 branch:  10-19
  *   - NSS 3.7 branch:  20-29
  *   - NSS 3.8 branch:  30-39
  *   - NSS 3.9 branch:  40-49
  *   - NSS 3.10 branch: 50-59
  *   - NSS 3.11 branch: 60-69
  *     ...
  *   - NSS 3.12 branch: 70-89
  *   - NSS 3.13 branch: 90-99
  *   - NSS 3.14 branch: 100-109
  *     ...
  *   - NSS 3.29 branch: 250-255
  *
  * NSS_BUILTINS_LIBRARY_VERSION_MINOR is a CK_BYTE.  It's not clear
  * whether we may use its full range (0-255) or only 0-99 because
  * of the comment in the CK_VERSION type definition.
  */
 #define NSS_BUILTINS_LIBRARY_VERSION_MAJOR 2
-#define NSS_BUILTINS_LIBRARY_VERSION_MINOR 6
-#define NSS_BUILTINS_LIBRARY_VERSION "2.6"
+#define NSS_BUILTINS_LIBRARY_VERSION_MINOR 7
+#define NSS_BUILTINS_LIBRARY_VERSION "2.7"
 
 /* These version numbers detail the semantic changes to the ckfw engine. */
 #define NSS_BUILTINS_HARDWARE_VERSION_MAJOR 1
 #define NSS_BUILTINS_HARDWARE_VERSION_MINOR 0
 
-/* These version numbers detail the semantic changes to ckbi itself 
+/* These version numbers detail the semantic changes to ckbi itself
  * (new PKCS #11 objects), etc. */
 #define NSS_BUILTINS_FIRMWARE_VERSION_MAJOR 1
 #define NSS_BUILTINS_FIRMWARE_VERSION_MINOR 0
 
 #endif /* NSSCKBI_H */