testsuite: Bump metrics for T5631 and T6048
testsuite: Bump metrics for T5631 and T6048

It's unclear what these are due to but they are causing the Darwin builds to
fail.

sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc