Pernosco now supports SHA instructions, pull latest pernosco-submit

[Kyle Huey]

Hi everyone,

This weekend I've upgraded the machines Pernosco runs on to have Ice
Lake-derived Xeon processors. This means that we can now support
traces recorded with the SHA extension instructions. If you have been
creating recordings of Firefox for Pernosco on a newish CPU, there are
workarounds that you may have been using that are no longer required.

For everyone:
- Pull the latest pernosco-submit

For those with Intel processors
- Remove NSS_DISABLE_HW_SHA from your environment if it is set.
- Create recordings with `rr record --disable-avx512` from now on.
(You were probably previously using `rr record
--disable-cpuid-features-ext 0xfc230000,0x00002c42,0x0000000c`)

For those with AMD processors
- Remove NSS_DISABLE_HW_SHA from your environment.

- Kyle

[Kyle Huey]

jesup points out that it's --disable-avx-512 not --disable-avx512

- Kyle