chore: Translate languages/fake-plugin.pot in es

77% of minimum 25% translated source file: 'languages/fake-plugin.pot'
on 'es'.

Sync of partially translated files: 
untranslated content is included with an empty translation 
or source language content depending on file format

languages/es_ES.po

@@ -52,7 +52,7 @@ msgstr "¡Hola, mundo 2!"
 
 #: src/App.php:19
 msgid "Hello, bye!"
-msgstr ""
+msgstr "¡Hola, adiós!"
 
 #: src/App.php:24
 msgid "Super au revoir"