Log Message:
nss: Update to 3.56

CHangelog:
Notable Changes in NSS 3.56

* The known issue where Makefile builds failed to locate seccomon.h was fixed
in Bug 1653975.
* NSPR dependency updated to 4.28.

Bugs fixed in NSS 3.56

* Bug 1650702 - Support SHA-1 HW acceleration on ARMv8
* Bug 1656981 - Use MPI comba and mulq optimizations on x86-64 MacOS.
* Bug 1654142 - Add CPU feature detection for Intel SHA extension.
* Bug 1648822 - Add stricter validation of DH keys in FIPS mode.
* Bug 1656986 - Properly detect arm64 during GYP build architecture detection.
* Bug 1652729 - Add build flag to disable RC2 and relocate to
lib/freebl/deprecated.
* Bug 1656429 - Correct RTT estimate used in 0-RTT anti-replay.
* Bug 1588941 - Send empty certificate message when scheme selection fails.
* Bug 1652032 - Fix failure to build in Windows arm64 makefile
cross-compilation.
* Bug 1625791 - Fix deadlock issue in nssSlot_IsTokenPresent.
* Bug 1653975 - Fix 3.53 regression by setting "all" as the default \ 
makefile
target.
* Bug 1659792 - Fix broken libpkix tests with unexpired PayPal cert.
* Bug 1659814 - Fix interop.sh failures with newer tls-interop commit and
dependencies.
* Bug 1656519 - Update NSPR dependency to 4.28.