🌐 Added French strings for newsletter copy (#22596)

no ref

This translates into French the CTA in email newsletters. A few minor
changes were made to previously submitted translations to make them more
accurate.

Author: gengelberts

ghost/i18n/locales/fr/newsletter.json

@@ -1,25 +1,25 @@
 {
     "{date}": "{date}",
-    "Become a paid member of {site} to get access to all premium content.": "",
+    "Become a paid member of {site} to get access to all premium content.": "Devenez un abonné payant de {site} pour accéder à du contenu exclusif.",
     "By {authors}": "Par {authors}",
     "Comment": "Commentaire",
     "complimentary": "offert",
     "Email": "E-mail",
     "free": "gratuit",
     "Keep reading": "Continuer la lecture",
-    "Less like this": "Moins de contenu similaire",
+    "Less like this": "Contenu à éviter",
     "Manage subscription": "Gérer l'abonnement",
     "Member since": "Abonné depuis",
-    "More like this": "Davantage de contenu similaire",
+    "More like this": "Contenu apprécié",
     "Name": "Nom",
     "paid": "payé",
     "Subscription details": "Détails de l'abonnement",
     "trialing": "en période d'essai",
     "Unsubscribe": "Se désabonner",
-    "Upgrade": "",
-    "Upgrade to continue reading.": "",
+    "Upgrade": "Modifiez votre abonnement",
+    "Upgrade to continue reading.": "Modifiez votre abonnement pour lire la suite.",
     "View in browser": "Voir dans le navigateur",
-    "You are receiving this because you are a <strong>%%{status}%% subscriber</strong> to {site}.": "Vous recevez ceci parce que vous êtes un-e <strong>abonné-e %%{status}%%</strong> de {site}.",
+    "You are receiving this because you are a <strong>%%{status}%% subscriber</strong> to {site}.": "Vous recevez ceci parce que vous êtes un·e <strong>abonné·e %%{status}%%</strong> de {site}.",
     "Your free trial ends on {date}, at which time you will be charged the regular price. You can always cancel before then.": "Votre essai gratuit se termine le {date}, après quoi le prix normal vous sera facturé. Vous pouvez toujours annuler avant cette date.",
     "Your subscription has been canceled and will expire on {date}. You can resume your subscription via your account settings.": "Votre abonnement a été annulé et expirera le {date}. Vous pouvez reprendre votre abonnement via les paramètres de votre compte.",
     "Your subscription has expired.": "Votre abonnement a expiré.",