fix: replace hash routine md5 with sha256

[darmbrust]

swapping out the md5 hash routine with sha256 (truncated to 32 chars)
and base64url encoded.
this allows jest to run on a system where openssl is in a fips enabled
mode.

Summary

#10726

Test plan

ran e2e tests.

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[SimenB]

Cool thanks! Do you know of a way we can run our tests on a fips system? Via some docker image or something?

Also, please add a changelog entry 🙂

[SimenB]

I'm unable to find any way of actually testing this (and not even any eslint rule to ban md5), so this is a best effort thing that will probably break. However, can land for now to hopefully unblock folks

[darmbrust]

If you have redhat 8 running in a VM or something, enabling fips mode is pretty easy:
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/security_hardening/using-the-system-wide-cryptographic-policies_security-hardening#switching-the-system-to-fips-mode_using-the-system-wide-cryptographic-policies

Its a bit trickier in a docker image, because there is a kernel boot flag involved, which you can't set independently for a docker container.
The reason we actually got his by this, is because the host running our jenkins / kubernetes build cluster is in fips mode - and when we deployed a redhat 8 image into it as a builder, the 'fips=1' flag from the kernel would be seen in the container, and that was enough to trigger openssl to go into fips mode inside the container.

I couldn't find any way to get openssl to come back out of fips mode when it saw that kernel flag.

[SimenB]

If we could get something running on GH Actions, that'd be awesome. Or some other CI provider I guess

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