flatpak: Replace gtuber with Clapper enhancers

Also add all required dependencies

pkgs/flatpak/com.github.rafostar.Clapper-nightly.json

@@ -50,7 +50,8 @@
         "testing/dav1d.json",
         "testing/gstreamer.json",
         "testing/gst-plugins-rs.json",
-        "testing/gtuber.json",
+        "testing/yt-dlp.json",
+        "testing/libpeas.json",
         {
             "name": "clapper",
             "buildsystem": "meson",
@@ -60,7 +61,8 @@
                     "path": "../../."
                 }
             ]
-        }
+        },
+        "testing/clapper-enhancers.json"
     ],
     "cleanup-commands": [
         "mkdir -p /app/lib/ffmpeg",