✅(e2e) fix tests after translations update

The english translation requires at least one translated string to
be considered as a supported language.

Remove tested languages which are not supported yet.

.github/workflows/conversations-frontend.yml

@@ -69,7 +69,7 @@ jobs:
   test-e2e-chromium:
     runs-on: self-hosted
     needs: install-dependencies
-    timeout-minutes: 20
+    timeout-minutes: 40
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4

src/frontend/apps/conversations/src/i18n/translations.json

@@ -1,5 +1,9 @@
 {
-  "en": { "translation": {} },
+  "en": {
+    "translation": {
+      "Generating...": "Generating..."
+    }
+  },
   "fr": {
     "translation": {
       "Access Denied - Error 403": "Accès refusé - Erreur 403",

src/frontend/apps/e2e/__tests__/app-conversations/language.spec.ts

@@ -41,10 +41,7 @@ test.describe.serial('Language', () => {
     await expect(page.getByLabel('Se déconnecter')).toBeVisible();
 
     await header.getByRole('button').getByText('Français').click();
-    await page.getByLabel('Deutsch').click();
-    await expect(header.getByRole('button').getByText('Deutsch')).toBeVisible();
-
-    await expect(page.getByLabel('Abmelden')).toBeVisible();
+    await page.getByLabel('English').click();
   });
 
   test.fixme(