patch 9.1.0510: CI: test_gettext fails on MacOS14 + MSVC Win

Problem:  CI: test_gettext fails on MacOS14 + MSVC Win
          (after v9.1.0509)
Solution: Skip the test for now

related: #12447

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/testdir/test_gettext_utf8.vim b/src/testdir/test_gettext_utf8.vim
index 277710e..bb46ca0 100644
--- a/src/testdir/test_gettext_utf8.vim
+++ b/src/testdir/test_gettext_utf8.vim
@@ -1,4 +1,7 @@
 source check.vim
+" TODO: Why does this fail on MacOS 14 and Windows MSVC (Github CI)?
+CheckNotMac
+CheckNotMSWindows
 
 " Test for gettext()
 func Test_gettext()