MAINTAINERS: update maintainers for hal_nuvoton

The nuvoton HAL module is for the Numicro platform, not NPCX. Update the
list of maintainers accordingly.

(cherry picked from commit d215c26)

Original-Link: zephyrproject-rtos/zephyr#49678 (comment)
Original-Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
GitOrigin-RevId: d215c26
Change-Id: I305c4d31aad14cf99234037c788117ae1f4ce764
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/zephyr/+/3882561
Tested-by: CopyBot Service Account <copybot.service@gmail.com>
Tested-by: Aaron Massey <aaronmassey@google.com>
Commit-Queue: Aaron Massey <aaronmassey@google.com>
Reviewed-by: Aaron Massey <aaronmassey@google.com>

MAINTAINERS.yml

@@ -2244,8 +2244,7 @@ West:
 "West project: hal_nuvoton":
   status: maintained
   maintainers:
-    - MulinChao
-    - ChiHuaL
+    - ssekar15
   files:
     - modules/Kconfig.nuvoton
   labels: