chore: new Crowdin updates

otetranome - Portuguese, Brazilian; Portuguese
forght - German
glottis0q - German
ernestoacostame - Spanish
Lucian I. Last (lil5) - Dutch
ButterflyOfFire (BoFFire) - Arabic
eorn - Breton
Angelos Chouvardas (achouvardas) - Greek
Russian Retro (retrograde) - Russian
cExplorer - German
GabiSnow - Spanish
CTHTC - German
Romain de Laage (rdelaage) - Spanish
LuuzViir (Spanish)
Samuel Roland (samuelroland) - French
thelama - Portuguese

modules/Admin/Language/el/Validation.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright  2020 Ad Aures
+ * @license    https://www.gnu.org/licenses/agpl-3.0.en.html AGPL3
+ * @link       https://castopod.org/
+ */
+
+return [
+    'min_dims' =>
+        '{field} is either not an image, or it is not wide or tall enough.',
+    'is_image_ratio' =>
+        '{field} is either not an image or not of the right ratio.',
+    'validate_url' =>
+        'The {field} field must be a valid URL (eg. https://example.com/).',
+];