[caf] Update caf to 0.17.6

[rkesters]

Update caf to 0.17.6

• What does your PR fix? I did not create an issues, I just did the work of updating caf to the latest version.

• Which triplets are supported/not supported? no change

• Have you updated the CI baseline? no

• Does your PR follow the maintainer guide? yes

[ghost]

All CLA requirements met.

[rkesters]

Can I get some help from a maintainer? The one job that is failing appears ti fail ob build tinyxml, which i did not change.

[PhoebeHui]

I didn't see theat failure, it seems flaky issues, I have rerun the pipeline.

[rkesters]

@PhoebeHui do I need to do anything else to get this merged? If not when do you think it will be merged?

Thank you for your help.

[PhoebeHui]

@BillyONeal, could you help merge this PR?

[BillyONeal]

Patch file quesiton...

[BillyONeal]

Sounds good; just wanted to make sure you intended to remove it :). Thanks!

[rkesters]

@PhoebeHui or @BillyONeal can one of you help the Azure Pipeline it appears to be hung up, been running for over a day.

[BillyONeal]

It's not been over a day; I pushed a change 7 hours ago that reset it. You just got a little unlucky and there were like 3 PRs that each rebuilt the full tree in front of this one. We have 18 windows boxes in the fleet and they've been busy; rebuilding 1300+ ports takes awhile.

(Bottom 3 rows are the Linux, Windows, and Mac fleet respectively; the Windows fleet is much bigger because we test 6 triplets for it vs only 1 for the other 2 platforms

)

[PhoebeHui]

The CI failed to download source before, passed after rerun.

[BillyONeal]

Thanks for your contribution!