Bump linux unittest runner to linux.2xlarge.memory #15400
                
     Merged
            
            
          
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Summary
Unittest jobs are dying since #15180. I'm not entirely sure why the jobs passed on the PR, but they are failing consistently since on trunk. Testing a runner size bump (2xlarge -> 2xlarge.memory) to see if that resolves it.
Example logs (from another PR). Note that the exit code (137 / SIGKILL) likely means OOM kill.