partner: Update Upstage Model Names and Remove Deprecated Model (#29093)

This PR updates model names in the upstage library to reflect the latest
naming conventions and removes deprecated models.

Changes:

Renamed Models:
- `solar-1-mini-chat` -> `solar-mini`
- `solar-1-mini-embedding-query` -> `embedding-query`

Removed Deprecated Models:
- `layout-analysis` (replaced to `document-parse`)

Reference:
- https://console.upstage.ai/docs/getting-started/overview
-
https://github.com/langchain-ai/langchain-upstage/releases/tag/libs%2Fupstage%2Fv0.5.0

Additional guidelines:
- Make sure optional dependencies are imported within a function.
- Please do not add dependencies to pyproject.toml files (even optional
ones) unless they are required for unit tests.
- Most PRs should not touch more than one package.
- Changes should be backwards compatible.
- If you are adding something to community, do not re-import it in
langchain.

If no one reviews your PR within a few days, please @-mention one of
baskaryan, efriis, eyurtsev, ccurme, vbarda, hwchase17.

cookbook/README.md

@@ -50,7 +50,7 @@ Notebook | Description
 [press_releases.ipynb](https://github.com/langchain-ai/langchain/tree/master/cookbook/press_releases.ipynb) | Retrieve and query company press release data powered by [Kay.ai](https://kay.ai).
 [program_aided_language_model.i...](https://github.com/langchain-ai/langchain/tree/master/cookbook/program_aided_language_model.ipynb) | Implement program-aided language models as described in the provided research paper.
 [qa_citations.ipynb](https://github.com/langchain-ai/langchain/tree/master/cookbook/qa_citations.ipynb) | Different ways to get a model to cite its sources.
-[rag_upstage_layout_analysis_groundedness_check.ipynb](https://github.com/langchain-ai/langchain/tree/master/cookbook/rag_upstage_layout_analysis_groundedness_check.ipynb) | End-to-end RAG example using Upstage Layout Analysis and Groundedness Check.
+[rag_upstage_document_parse_groundedness_check.ipynb](https://github.com/langchain-ai/langchain/tree/master/cookbook/rag_upstage_document_parse_groundedness_check.ipynb) | End-to-end RAG example using Upstage Document Parse and Groundedness Check.
 [retrieval_in_sql.ipynb](https://github.com/langchain-ai/langchain/tree/master/cookbook/retrieval_in_sql.ipynb) | Perform retrieval-augmented-generation (rag) on a PostgreSQL database using pgvector.
 [sales_agent_with_context.ipynb](https://github.com/langchain-ai/langchain/tree/master/cookbook/sales_agent_with_context.ipynb) | Implement a context-aware ai sales agent, salesgpt, that can have natural sales conversations, interact with other systems, and use a product knowledge base to discuss a company's offerings.
 [self_query_hotel_search.ipynb](https://github.com/langchain-ai/langchain/tree/master/cookbook/self_query_hotel_search.ipynb) | Build a hotel room search feature with self-querying retrieval, using a specific hotel recommendation dataset.

cookbook/rag_upstage_document_parse_groundedness_check.ipynb

@@ -4,8 +4,8 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# RAG using Upstage Layout Analysis and Groundedness Check\n",
-    "This example illustrates RAG using [Upstage](https://python.langchain.com/docs/integrations/providers/upstage/) Layout Analysis and Groundedness Check."
+    "# RAG using Upstage Document Parse and Groundedness Check\n",
+    "This example illustrates RAG using [Upstage](https://python.langchain.com/docs/integrations/providers/upstage/) Document Parse and Groundedness Check."
    ]
   },
   {
@@ -23,16 +23,16 @@
     "from langchain_core.runnables.base import RunnableSerializable\n",
     "from langchain_upstage import (\n",
     "    ChatUpstage,\n",
+    "    UpstageDocumentParseLoader,\n",
     "    UpstageEmbeddings,\n",
     "    UpstageGroundednessCheck,\n",
-    "    UpstageLayoutAnalysisLoader,\n",
     ")\n",
     "\n",
     "model = ChatUpstage()\n",
     "\n",
     "files = [\"/PATH/TO/YOUR/FILE.pdf\", \"/PATH/TO/YOUR/FILE2.pdf\"]\n",
     "\n",
-    "loader = UpstageLayoutAnalysisLoader(file_path=files, split=\"element\")\n",
+    "loader = UpstageDocumentParseLoader(file_path=files, split=\"element\")\n",
     "\n",
     "docs = loader.load()\n",
     "\n",

libs/community/langchain_community/chat_models/solar.py

@@ -24,7 +24,7 @@ class SolarChat(SolarCommon, ChatOpenAI):  # type: ignore[override, override]
 
             from langchain_community.chat_models.solar import SolarChat
 
-            solar = SolarChat(model="solar-1-mini-chat")
+            solar = SolarChat(model="solar-mini")
     """
 
     max_tokens: int = Field(default=1024)

libs/community/langchain_community/embeddings/solar.py

@@ -70,7 +70,7 @@ class SolarEmbeddings(BaseModel, Embeddings):
 
     endpoint_url: str = "https://api.upstage.ai/v1/solar/embeddings"
     """Endpoint URL to use."""
-    model: str = "solar-1-mini-embedding-query"
+    model: str = "embedding-query"
     """Embeddings model name to use."""
     solar_api_key: Optional[SecretStr] = None
     """API Key for Solar API."""

libs/community/langchain_community/llms/solar.py

@@ -44,7 +44,7 @@ class SolarCommon(BaseModel):
     base_url: str = SOLAR_SERVICE_URL_BASE
     solar_api_key: Optional[SecretStr] = Field(default=None, alias="api_key")
     """Solar API key. Get it here: https://console.upstage.ai/services/solar"""
-    model_name: str = Field(default="solar-1-mini-chat", alias="model")
+    model_name: str = Field(default="solar-mini", alias="model")
     """Model name. Available models listed here: https://console.upstage.ai/services/solar"""
     max_tokens: int = Field(default=1024)
     temperature: float = 0.3