REPL: disable flaky win32 stacktrace tests (JuliaLang#55408)

Disables these tests on win32 that have been flaky on that platform
since February at least JuliaLang#53340

stdlib/REPL/test/repl.jl

@@ -244,8 +244,9 @@ fake_repl(options = REPL.Options(confirm_exit=false,hascolor=true)) do stdin_wri
         @test occursin("shell> ", s) # check for the echo of the prompt
         @test occursin("'", s) # check for the echo of the input
         s = readuntil(stdout_read, "\n\n")
-        @test startswith(s, "\e[0mERROR: unterminated single quote\nStacktrace:\n  [1] ") ||
-              startswith(s, "\e[0m\e[1m\e[91mERROR: \e[39m\e[22m\e[91munterminated single quote\e[39m\nStacktrace:\n  [1] ")
+        @test(startswith(s, "\e[0mERROR: unterminated single quote\nStacktrace:\n  [1] ") ||
+            startswith(s, "\e[0m\e[1m\e[91mERROR: \e[39m\e[22m\e[91munterminated single quote\e[39m\nStacktrace:\n  [1] "),
+            skip = Sys.iswindows() && Sys.WORD_SIZE == 32)
         write(stdin_write, "\b")
         wait(t)
     end
@@ -1650,12 +1651,12 @@ fake_repl() do stdin_write, stdout_read, repl
     write(stdin_write, "foobar\n")
     readline(stdout_read)
     @test readline(stdout_read) == "\e[0mERROR: UndefVarError: `foobar` not defined in `Main`"
-    @test readline(stdout_read) == ""
+    @test readline(stdout_read) == "" skip = Sys.iswindows() && Sys.WORD_SIZE == 32
     readuntil(stdout_read, "julia> ", keep=true)
     # check that top-level error did not change `err`
     write(stdin_write, "err\n")
     readline(stdout_read)
-    @test readline(stdout_read) == "\e[0m"
+    @test readline(stdout_read) == "\e[0m" skip = Sys.iswindows() && Sys.WORD_SIZE == 32
     readuntil(stdout_read, "julia> ", keep=true)
     # generate deeper error
     write(stdin_write, "foo() = foobar\n")