testsuite: Mark T7037 as broken on Windows
testsuite: Mark T7037 as broken on Windows

Due to #12725.

sdiehl/ghc,ezyang/ghc,mettekou/ghc,ezyang/ghc,sdiehl/ghc,mettekou/ghc,ezyang/ghc,olsner/ghc,ezyang/ghc,mettekou/ghc,sdiehl/ghc,ezyang/ghc,ezyang/ghc,olsner/ghc,sdiehl/ghc,mettekou/ghc,mettekou/ghc,olsner/ghc,shlevy/ghc,olsner/ghc,sdiehl/ghc,shlevy/ghc,shlevy/ghc,olsner/ghc,mettekou/ghc,shlevy/ghc,shlevy/ghc,olsner/ghc,shlevy/ghc,sdiehl/ghc,olsner/ghc,shlevy/ghc,ezyang/ghc,mettekou/ghc,sdiehl/ghc