[release/8.0-staging] Bump to new Ubuntu 22.04 queue for PPC64 #97555
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Backport of #97451 to release/8.0-staging
/cc @akoeplinger @directhex
Customer Impact
The Helix queue we're using to run tests on ppc64 is deprecated, we need to upgrade to one with a more modern Ubuntu 22.04 version.
Regression
Testing
CI testing.
Risk
Low, this is an infrastructure-only change for testing.