Pull Falcon updates from PQClean

[dstebila]

PQClean/PQClean@c3abebf

Fixes #1488.

• [No] Does this PR change the input/output behaviour of a cryptographic algorithm (i.e., does it change known answer test values)? (If so, a version bump will be required from x.y.z to x.(y+1).0.)
• [No] Does this PR change the list of algorithms available -- either adding, removing, or renaming? Does this PR otherwise change an API? (If so, PRs in oqs-provider, OQS-OpenSSL, OQS-BoringSSL, and OQS-OpenSSH will also need to be ready for review and merge by the time this is merged.)

[SWilson4]

Looks good to me.

[dstebila]

I'm not sure what aspect of the code generation script caused the line breaks -- can you take a quick look @SWilson4?

[SWilson4]

I'm not sure what aspect of the code generation script caused the line breaks -- can you take a quick look @SWilson4?

It turns out that it's expected behaviour of the yaml.dump function, which breaks lines at some default width unless an optional width key is provided:

liboqs/scripts/copy_from_upstream/update_upstream_alg_docs.py

Lines 23 to 25 in be67811

	def store_yaml(filename, contents, encoding='utf-8'):
	with open(filename, mode='w', encoding=encoding) as fh:
	yaml.dump(contents, fh, sort_keys=False, allow_unicode=True)

Apparently the result is still valid YAML, so I don't think we need to worry about it.