[TimePicker][i18n] Update string translations.

Resolves #4802

PiperOrigin-RevId: 766656496

Author: paulfthomas

lib/java/com/google/android/material/timepicker/res/values-ja/strings.xml

@@ -15,8 +15,8 @@
   ~ limitations under the License.
 -->
 <resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
-  <string name="material_timepicker_pm">PM</string>
-  <string name="material_timepicker_am">AM</string>
+  <string name="material_timepicker_pm">午後</string>
+  <string name="material_timepicker_am">午前</string>
   <string name="material_timepicker_select_time">時刻を選択</string>
   <string name="material_timepicker_minute">分</string>
   <string name="material_timepicker_hour">時</string>