🌐 Update translations for ja (update-outdated) (#14588)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Yurii Motov <yurii.motov.monte@gmail.com>
Co-authored-by: Motov Yurii <109919500+YuriiMotov@users.noreply.github.com>
Co-authored-by: Maruo.S <raspi-maru2004@outlook.jp>

scripts/docs.py

@@ -23,6 +23,7 @@ SUPPORTED_LANGS = {
     "en",
     "de",
     "es",
+    "ja",
     "ko",
     "pt",
     "ru",