Cookie “SameSite” attribute set to “None” (soon to be rejected)

[nelsonic]

Just saw this warning in Firefox:

Cookie “_app_key” will be soon rejected because it has the “SameSite” attribute set to “None” or an invalid value, without the “secure” attribute. To know more about the “SameSite“ attribute, read https://developer.mozilla.org/docs/Web/HTTP/Headers/Set-Cookie/SameSite

• Need to figure out how to set the cookie to "SameSite" in Phoenix
  https://developer.mozilla.org/docs/Web/HTTP/Headers/Set-Cookie/SameSite
  • Looks fairly straightforward: https://elixirforum.com/t/how-to-add-samesite-cookies-on-phoenix/31658