Update pyproject.toml to 0.15.1 (#4222)

### What problem does this PR solve?

Missing update information

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

Signed-off-by: jinhai <haijin.chn@gmail.com>

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "ragflow"
-version = "0.15.0"
+version = "0.15.1"
 description = "[RAGFlow](https://ragflow.io/) is an open-source RAG (Retrieval-Augmented Generation) engine based on deep document understanding. It offers a streamlined RAG workflow for businesses of any scale, combining LLM (Large Language Models) to provide truthful question-answering capabilities, backed by well-founded citations from various complex formatted data."
 authors = ["Your Name <you@example.com>"]
 license = "https://github.com/infiniflow/ragflow/blob/main/LICENSE"

sdk/python/pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "ragflow-sdk"
-version = "0.15.0"
+version = "0.15.1"
 description = "Python client sdk of [RAGFlow](https://github.com/infiniflow/ragflow). RAGFlow is an open-source RAG (Retrieval-Augmented Generation) engine based on deep document understanding."
 authors = ["Zhichang Yu <yuzhichang@gmail.com>"]
 license = "Apache License, Version 2.0"