add deprecation notice to FIPS in OSS (enterprise page is gone)

[aaaaaaaalex]

CORE-10911

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OSS next

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[ctauchen]

Thanks @aaaaaaaalex. I know we deprecated and removed FIPS support in CE and CC. Last I remember we were keeping this in OSS because it might work, even if we don't support it. My memory may be off though.

Does this change stem from code changes that will kill this function entirely?

[aaaaaaaalex]

@ctauchen , while I haven't ripped out any FIPS code, I have been working on a FIPS-adjacent customer issue and was advised to add this notice.

Last I remember we were keeping this in OSS because it might work, even if we don't support it.

I'll CC @fasaxc and @matthewdupre here - I think we were of the belief that this FIPS documentation was left in by accident. Since I haven't killed off any FIPS functionality, I would imagine your reasoning still holds true. Do we want to carry on with this change now?

[ctauchen]

Ok, thanks for that context. If we do want this gone, we might go ahead and add the deprecation notice to 3.29 with scheduled removal in 3.30.