Sync WMS sources [skip travis]

Author: rbuffat

sources/europe/de/Köln-TrueDOP-2024.geojson

@@ -12,7 +12,8 @@
             "EPSG:4258",
             "EPSG:4326",
             "EPSG:5555",
-            "EPSG:25832"
+            "EPSG:25832",
+            "EPSG:31466"
         ],
         "best": true,
         "start_date": "2024-06-28",

sources/north-america/us/nj/DVRPC_2020_CamdenNJ.geojson

@@ -15,7 +15,6 @@
         "type": "wms",
         "available_projections": [
             "CRS:84",
-            "EPSG:3857",
             "EPSG:4326",
             "EPSG:6347"
         ],