Translations update from Opengist (#373)

* Translated using Weblate (French)

Currently translated at 87.5% (245 of 280 strings)

Translation: Opengist/Opengist
Translate-URL: http://tr.opengist.io/projects/_/opengist/fr/

* Translated using Weblate (Spanish)

Currently translated at 100.0% (280 of 280 strings)

Translation: Opengist/Opengist
Translate-URL: http://tr.opengist.io/projects/_/opengist/es/

* Translated using Weblate (Chinese (Simplified Han script))

Currently translated at 100.0% (280 of 280 strings)

Translation: Opengist/Opengist
Translate-URL: http://tr.opengist.io/projects/_/opengist/zh_Hans/

* Translated using Weblate (Chinese (Simplified Han script))

Currently translated at 100.0% (280 of 280 strings)

Translation: Opengist/Opengist
Translate-URL: http://tr.opengist.io/projects/_/opengist/zh_Hans/

* Translated using Weblate (Chinese (Simplified Han script))

Currently translated at 100.0% (280 of 280 strings)

Translation: Opengist/Opengist
Translate-URL: http://tr.opengist.io/projects/_/opengist/zh_Hans/

* Added translation using Weblate (Polish)

* Translated using Weblate (Polish)

Currently translated at 100.0% (280 of 280 strings)

Translation: Opengist/Opengist
Translate-URL: http://tr.opengist.io/projects/_/opengist/pl/

---------

Co-authored-by: Lucas Colombo <lucasncolombo@gmail.com>
Co-authored-by: GabrielxD <gabrielxduo@outlook.com>
Co-authored-by: GGORG <GGORG0@protonmail.com>

internal/i18n/locales/fr-FR.yml

@@ -258,3 +258,4 @@ validation.not-enough: 'Pas assez de %s'
 validation.invalid: '%s non valide'
 html.title.admin-panel: 'Administration'
 settings.ssh-key-exists: La clé SSH existe déjà
+gist.delete.confirm: Voulez-vous supprimer ce Gist ?