Do not skip worker on Windows

It had been skipped because of an old GHC version on Windows, but this should be recent enough now.

This reverts commit 45340b1.

Author: avdv

tools/worker/BUILD.bazel

@@ -3,8 +3,6 @@ load("@rules_haskell//haskell:cabal.bzl", "haskell_cabal_binary")
 haskell_cabal_binary(
     name = "bin",
     srcs = glob(["**"]),
-    # Requires more recent GHC version than we use on Windows.
-    tags = ["dont_test_on_windows"],
     visibility = ["//visibility:public"],
     deps = [
         "@rules_haskell_worker_dependencies//:base",