[tx-robot] updated from transifex

apps/encryption/l10n/oc.js

apps/encryption/l10n/oc.json

apps/files_external/l10n/fr.js

apps/files_external/l10n/fr.json

apps/user_ldap/l10n/sk_SK.js

apps/user_ldap/l10n/sk_SK.json

core/l10n/bg_BG.js

core/l10n/bg_BG.json

core/l10n/ca.js

core/l10n/ca.json

core/l10n/cs_CZ.js

core/l10n/cs_CZ.json

core/l10n/da.js

core/l10n/da.json

core/l10n/de.js

core/l10n/de.json

core/l10n/de_DE.js

core/l10n/de_DE.json

core/l10n/el.js

core/l10n/el.json