Pontoon/AMO Frontend: Update Sinhala (si)

Co-authored-by: Ana <[email protected]> (si)

Author: mozilla-pontoon

locale/si/LC_MESSAGES/amo.po

@@ -2497,7 +2497,7 @@ msgstr "ඔබ සැමවිට එක්කහුවල නවතම අන
 
 #: src/amo/pages/AddonVersions/index.js:186
 msgid "Versions"
-msgstr ""
+msgstr "අනුවාද"
 
 #: src/amo/pages/AddonVersions/index.js:198
 msgid "Latest version"