pinecone: update pinecone client (#28320)

This PR updates the Pinecone client to `5.4.0`, as well as its
dependencies (`pinecone-plugin-inference` and
`pinecone-plugin-interface`).

Note: `pinecone-client` is now simply called `pinecone`.

**Question for reviewer(s):** should this PR also update the `pinecone`
dep in [the root dir's `poetry.lock`
file](https://github.com/langchain-ai/langchain/blob/master/poetry.lock#L6729)?
Was unsure. (I don't believe so b/c it seems pinned to a lower version
likely based on 3rd-party deps (e.g. Unstructured).)

--
TW: @audrey_sage_


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libs/community/langchain_community/vectorstores/pinecone.py

@@ -31,7 +31,7 @@ def _import_pinecone() -> Any:
     except ImportError as e:
         raise ImportError(
             "Could not import pinecone python package. "
-            "Please install it with `pip install pinecone-client`."
+            "Please install it with `pip3 install pinecone`."
         ) from e
     return pinecone
 
@@ -48,7 +48,7 @@ def _is_pinecone_v3() -> bool:
 class Pinecone(VectorStore):
     """`Pinecone` vector store.
 
-    To use, you should have the ``pinecone-client`` python package installed.
+    To use, you should have the ``pinecone`` python package installed.
 
     This version of Pinecone is deprecated. Please use `langchain_pinecone.Pinecone`
     instead.