T18522-dbg-ppr.hs is broken

Compile failed (exit code 1) errors were:
[1 of 2] Compiling Main             ( T18522-dbg-ppr.hs, T18522-dbg-ppr.o )

T18522-dbg-ppr.hs:13:1: error: [GHC-61948]
    Could not find module ‘GHC.Tc.Utils.Zonk’.
    Perhaps you meant
      GHC.Tc.Utils.Env (from ghc-9.7)
      GHC.Tc.Utils.Monad (from ghc-9.7)
    Use -v to see a list of the files searched for.

but as the test is marked fragile, it wasn't updated when zonking was refactored. Now it has no chance to work.