[llvm] [GitHub][CI] Add a new container to use for the abi tests (PR #166886)

[Tom Stellard via llvm-commits]

tstellar wrote:

> Did you try running GHA action with the new container? You can push locally-built container to Github (loginning with "classic token") and run workflow.

Yes, I ran a test of this on my fork.

https://github.com/llvm/llvm-project/pull/166886