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/partners/pinecone/langchain_pinecone/vectorstores.py

@@ -74,6 +74,7 @@ class PineconeVectorStore(VectorStore):
                     dimension=1536,
                     metric="cosine",
                     spec=ServerlessSpec(cloud="aws", region="us-east-1"),
+                    deletion_protection="enabled",  # Defaults to "disabled"
                 )
                 while not pc.describe_index(index_name).status["ready"]:
                     time.sleep(1)