Pontoon/AMO Frontend: Update Greek (el)

Co-authored-by: Jim Spentzos <[email protected]> (el)

Author: mozilla-pontoon

locale/el/LC_MESSAGES/amo.po

@@ -1670,11 +1670,11 @@ msgstr "Δικαιώματα"
 
 #: src/amo/components/PermissionsCard/index.js:84
 msgid "Required permissions:"
-msgstr ""
+msgstr "Απαιτούμενα δικαιώματα:"
 
 #: src/amo/components/PermissionsCard/index.js:94
 msgid "Optional permissions:"
-msgstr ""
+msgstr "Προαιρετικά δικαιώματα:"
 
 #: src/amo/components/PermissionsCard/permissions.js:27
 msgid "Read and modify bookmarks"