docs: accept v1.69.0-beta.1 runtime screenshot

Issue: #337
User-Visible: no

docs/images/screenshots.json

@@ -71,7 +71,7 @@
       "theme": "dark",
       "language": "en",
       "sourceSha256": "be9676025788af910419abcb7cd2896e99eb69619e5944639312c55661266c60",
-      "imageSha256": "9e435a6fe89564b9215b82a61fb7eae998266dd05483524ffa84160c35630e0c"
+      "imageSha256": "c2f629ef6592cd34420fe2711326a6cfffe386b3018242f9bb2aee3dbf01826b"
     },
     "device-display-preview": {
       "file": "06-device-display-preview.png",