Update seco weights with required keys

resnet50_sentinel2_rgb_seco.ckpt

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:84d4b6316126b6d6f8b1c623741c2aa4e90f193d38acad6a915c1548dba32016
-size 94341573
+oid sha256:584035dbd0726850cf7bf151f0f81370110fb585a4be073af8f8247da6fa2f65
+size 102541697