Use keyword arguments for ApplicationService calls

Not all services are using keywords, which breaks those calls in Ruby 3

spec/features/signup_spec.rb

@@ -53,7 +53,7 @@ RSpec.describe "Signup", type: :feature do
       expect(page).to have_content("Choose a password")
 
       expect(CreateAccount).to receive(:call)
-        .with({
+        .with(account: {
           username: "tony", domain: "kosmos.org",
           email: "tony@example.com", password: "a-valid-password",
           invitation: Invitation.last
@@ -97,7 +97,7 @@ RSpec.describe "Signup", type: :feature do
       expect(page).to have_content("Password is too short")
 
       expect(CreateAccount).to receive(:call)
-        .with({
+        .with(account: {
           username: "tony", domain: "kosmos.org",
           email: "tony@example.com", password: "a-valid-password",
           invitation: Invitation.last