chore: update version to 0.15.2 in packaging and docker configurations

[laipz8200]

✨ What’s New in v0.15.2? ✨

The v0.15.2 release is all about squashing bugs, unlocking new capabilities, and generally making things run smoother. Here's a peek at what's changed:

🚀 New Features

• Minimax-Text-01 Support: Added support for the new Minimax-Text-01 model by @AAlexDing in feat:Support Minimax-Text-01 #12763.
• Gemini-2.0-Flash-Thinking-Exp-01-21: New experimental model added by @jiandanfeng in feat: add gemini-2.0-flash-thinking-exp-01-21 #12924.
• Doubao 1.5 Model Series: Support for Doubao 1.5 models in our tooling setup by @sinomoe in feat(ark): support doubao 1.5 series of models #12935.
• Profile Avatar Customization: You can now change your profile avatar and keep it fresh, thanks to @miya in feat: Add ability to change profile avatar #12642.
• Environment Configuration for Chunk Length: Configure document chunk length through environment variables by @iamjoel in feat: support config chunk length by env #12925.

🛠️ Enhancements

• Credential Extraction Logic: Enhanced credential extraction logic for better configurability by @fujita-h in feat: enhance credential extraction logic based on configurate method #12853.
• Document Chunk Setting Updates: Now possible to update chunk settings for existing documents by @kurokobo in feat: allow updating chunk settings for the existing documents #12833.
• Full-Text Search in Milvus: You can now configure full-text search capabilities within Milvus by @JohnJyong in add milvus full text search setting #12930.

🐞 Bug Fixes

• Rerank Model Bug: Fixed the rerank model and switch issues across various tools by @WTW0313 in fix: Fix rerank model switching issue #12721 and @luckylhb90 in bug: fixed bedrock rerank bug #12774.
• Clipboard WriteText on HTTP: Resolved issues with clipboard text writing under the HTTP protocol by @le0zh in fix: resolve clipboard.writeText failure under HTTP protocol #12936.
• OpenAI Bad Request Error: Cleaned up issues causing bad request errors on OpenAI o1 endpoint by @k-zaku in fix: OpenAI o1 Bad Request Error #12839.
• ReAct Inference Error: Fixed error logging issue when ReAct inference mode is enabled by @jiandanfeng in fix: Agent is configured for ReAct inference mode, an error is reported when viewing the agent log #12920.
• Agent Log Formatting: Tweaked DeepSeek's API response handling to fix format issues by @jiandanfeng in fix: DeepSeek API Error with response format active (text and json_object)  #12747.

🧑‍💻 Developer Note

Note

Poetry Upgrade Alert: Heads up, devs! We've upgraded to Poetry 2.x from 1.x. This upgrade is aimed at making your package management smoother and more efficient, so make sure to update your local setup and check out what's new in Poetry 2.x by @bowenliang123 in #12369.

So, what's next? Get this version in your dev arsenal and explore these cool upgrades in Dify! As always, dive in, have fun, and let us know your thoughts.