Update ghost.json (#19644)

my proposal is one which is suitable in most situations and which is
respectful for ghost's customers. Thank you for your kind consideration
of my request.

Bonjour : This is the safe and universally appropriate way to say hello
in French, regardless of the situation. It's always polite and
respectful.

Salut : This is a casual greeting generally used with friends, family,
or people you know well. It's not appropriate in formal settings.

Got some code for us? Awesome 🎊!

Please include a description of your change & check your PR against this
list, thanks!

- [ ] There's a clear use-case for this code change, explained below
- [ ] Commit message has a short title & references relevant issues
- [ ] The build will pass (run `yarn test:all` and `yarn lint`)

We appreciate your contribution!

Co-authored-by: Ryan Feigenbaum <48868107+royalfig@users.noreply.github.com>

ghost/i18n/locales/fr/ghost.json

@@ -8,8 +8,8 @@
     "Confirm your email update for {{siteTitle}}!": "Confirmez votre adresse email pour {{siteTitle}} !",
     "Confirm your subscription to {{siteTitle}}": "Confirmez votre abonnement à {{siteTitle}}",
     "For your security, the link will expire in 24 hours time.": "Pour des raisons de sécurité, le lien expirera dans 24 heures.",
-    "Hey there,": "Salut,",
-    "Hey there!": "Salut !",
+    "Hey there,": "Bonjour,",
+    "Hey there!": "Bonjour !",
     "If you did not make this request, you can safely ignore this email.": "Si vous n’êtes pas à l'origine de cette demande, vous pouvez ignorer cet email.",
     "If you did not make this request, you can simply delete this message.": "Si vous n’êtes pas à l'origine de cette demande, vous pouvez supprimer cet email.",
     "Please confirm your email address with this link:": "Veuillez confirmez votre adresse email en cliquant ce lien :",