minor #19285 [Cache] Deprecate CouchbaseBucketAdapter (alexandre-daubois)

This PR was merged into the 7.1 branch.

Discussion
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[Cache] Deprecate `CouchbaseBucketAdapter`

Fix #19280

Commits
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46de392 [Cache] Deprecate `CouchbaseBucketAdapter`

Author: javiereguiluz

components/cache/adapters/couchbasebucket_adapter.rst

@@ -1,6 +1,12 @@
 Couchbase Bucket Cache Adapter
 ==============================
 
+.. deprecated:: 7.1
+
+    The ``CouchbaseBucketAdapter`` is deprecated since Symfony 7.1, use the
+    :doc:`CouchbaseCollectionAdapter </components/cache/adapters/couchbasecollection_adapter>`
+    instead.
+
 This adapter stores the values in-memory using one (or more) `Couchbase server`_
 instances. Unlike the :doc:`APCu adapter </components/cache/adapters/apcu_adapter>`, and similarly to the
 :doc:`Memcached adapter </components/cache/adapters/memcached_adapter>`, it is not limited to the current server's