Pontoon/AMO Frontend: Update Russian (ru)

Co-authored-by: Valery Ledovskoy <[email protected]> (ru)

Author: mozilla-pontoon

locale/ru/LC_MESSAGES/amo.po

@@ -1679,11 +1679,11 @@ msgstr "Разрешения"
 
 #: src/amo/components/PermissionsCard/index.js:84
 msgid "Required permissions:"
-msgstr ""
+msgstr "Требуемые разрешения:"
 
 #: src/amo/components/PermissionsCard/index.js:94
 msgid "Optional permissions:"
-msgstr ""
+msgstr "Опциональные разрешения:"
 
 #: src/amo/components/PermissionsCard/permissions.js:27
 msgid "Read and modify bookmarks"