fix(ja-JP): automated translation updates (#593)

Co-authored-by: AutoTranslator <hello@sanity.io>
Co-authored-by: Espen Hovlandsdal <espen@hovlandsdal.com>

locales/ja-JP/src/studio.ts

@@ -137,9 +137,9 @@ export default removeUndefinedLocaleResources({
   /** Label for selecting an hour preset. Receives a `time` param as a string on hh:mm format and a `date` param as a Date instance denoting the preset date */
   'calendar.action.set-to-time-preset': '{{time}}の{{date, datetime}}に設定',
   /** Aria label for button to open date picker */
-  'calendar.button.aria-label': undefined, // 'Open calendar'
+  'calendar.button.aria-label': 'カレンダーを開く',
   /** Tooltip content for button to open datetime input */
-  'calendar.button.tooltip-text': undefined, // 'Select date'
+  'calendar.button.tooltip-text': '日付を選択',
   /** Error message displayed in calendar when entered date is not the correct format */
   'calendar.error.must-be-in-format':
     '<Emphasis>{{exampleDate}}</Emphasis>の形式でなければなりません',