Fix(l10n): Update translations from Transifex

apps/federatedfilesharing/l10n/ja.js

apps/federatedfilesharing/l10n/ja.json

apps/files/l10n/ja.js

apps/files/l10n/ja.json

apps/files/l10n/pt_BR.js

apps/files/l10n/pt_BR.json

apps/files_external/l10n/ast.js

apps/files_external/l10n/ast.json

apps/files_external/l10n/bg.js

apps/files_external/l10n/bg.json

apps/files_external/l10n/ca.js

apps/files_external/l10n/ca.json

apps/files_external/l10n/cs.js

apps/files_external/l10n/cs.json

apps/files_external/l10n/da.js

apps/files_external/l10n/da.json

apps/files_external/l10n/de.js

apps/files_external/l10n/de.json

apps/files_external/l10n/de_DE.js

apps/files_external/l10n/de_DE.json