Revert "Turn off DeterministicTrivial test (see #8356)"

This reverts commit cd7a9128.

It's not needed any more, probably, because another workaround
fixes CI differently, probably. As long as it's deterministic enough...

cabal-testsuite/PackageTests/NewSdist/DeterministicTrivial/deterministic.test.hs

 import Test.Cabal.Prelude
 import qualified Data.ByteString as BS
--- import qualified Data.ByteString.Base16 as BS16
--- import qualified Crypto.Hash.SHA256 as SHA256
+import qualified Data.ByteString.Base16 as BS16
+import qualified Crypto.Hash.SHA256 as SHA256
 import System.FilePath
     ( (</>) )
 
-    -- Note: we cannot simply use `expectBroken` or `skip` or similar
-    -- becuase this test fails on imports (see #8357).
-
 main = cabalTest $ do
     cabal "v2-sdist" ["deterministic"]
     env <- getTestEnv
@@ -24,6 +21,4 @@ main = cabalTest $ do
     known <- liftIO (BS.readFile knownSdist)
     unknown <- liftIO (BS.readFile mySdist)
 
-    skipIf "#8356" True -- bogus, just to indicate that the test is skipped
-    assertEqual "hashes didn't match for sdist" True True
-    -- assertEqual "hashes didn't match for sdist" (BS16.encode $ SHA256.hash known) (BS16.encode $ SHA256.hash unknown)
+    assertEqual "hashes didn't match for sdist" (BS16.encode $ SHA256.hash known) (BS16.encode $ SHA256.hash unknown)