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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docs/docs/integrations/providers/pinecone.mdx

@@ -32,7 +32,7 @@ For a more detailed walkthrough of the Pinecone vectorstore, see [this notebook]
 ### Pinecone Hybrid Search
 
 ```bash
-pip install pinecone-client pinecone-text
+pip install pinecone pinecone-text
 ```
 
 ```python

docs/docs/integrations/retrievers/pinecone_hybrid_search.ipynb

@@ -24,7 +24,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "%pip install --upgrade --quiet  pinecone-client pinecone-text pinecone-notebooks"
+    "%pip install --upgrade --quiet  pinecone pinecone-text pinecone-notebooks"
    ]
   },
   {