[DEP] Deprecate the update function in BaseCollectionTransformer (#1744)

* deprecate update

* deprecate update

aeon/transformations/collection/base.py

@@ -29,6 +29,7 @@ class name: BaseCollectionTransformer
 
 import numpy as np
 import pandas as pd
+from deprecated.sphinx import deprecated
 
 from aeon.base import BaseCollectionEstimator
 from aeon.transformations.base import BaseTransformer
@@ -273,6 +274,12 @@ def inverse_transform(self, X, y=None):
 
         return Xt
 
+    # TODO: remove in v0.11.0
+    @deprecated(
+        version="0.10.0",
+        reason="The update method will be removed in version 0.11.0.",
+        category=FutureWarning,
+    )
     @final
     def update(self, X, y=None, update_params=True):
         """Update transformer with X, optionally y.