Docs: Update version references to v0.27.2 in READMEs and docs (#19501)

- Update version tags in README files (including translations) from
v0.27.1 to v0.27.2
- Modify Docker image references and documentation to reflect new
version
- Update version badges and image descriptions
- Maintain consistency across all language variants of README files

sdk/python/pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "ragflow-sdk"
-version = "0.27.1"
+version = "0.27.2"
 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 = [{ name = "Zhichang Yu", email = "yuzhichang@gmail.com" }]
 license = { text = "Apache License, Version 2.0" }

sdk/python/uv.lock

@@ -250,7 +250,7 @@ wheels = [
 
 [[package]]
 name = "ragflow-sdk"
-version = "0.27.1"
+version = "0.27.2"
 source = { virtual = "." }
 dependencies = [
     { name = "beartype" },