chore: add more translations for GitHub cards flag

locales/cs-CZ.json

@@ -81,6 +81,7 @@
   },
   "feature_flag": {
     "avatar_on_avatar": "Avatar on Avatar",
+    "github_cards": "GitHub Cards",
     "virtual_scroll": "Virtual Scrolling"
   },
   "help": {

locales/de-DE.json

@@ -57,6 +57,7 @@
     "status_not_found": "Status nicht gefunden"
   },
   "feature_flag": {
+    "github_cards": "GitHub Cards",
     "virtual_scroll": "Virtuelles Scrollen"
   },
   "menu": {

locales/en-US.json

@@ -81,6 +81,7 @@
   },
   "feature_flag": {
     "avatar_on_avatar": "Avatar on Avatar",
+    "github_cards": "GitHub Cards",
     "virtual_scroll": "Virtual Scrolling"
   },
   "help": {

locales/ja-JP.json

@@ -28,6 +28,7 @@
     "not_found": "404 Not Found"
   },
   "feature_flag": {
+    "github_cards": "GitHub Cards",
     "virtual_scroll": "仮想スクロール"
   },
   "menu": {