docs(changelog): add releases 0.193.2, 0.193.1, 0.193.0, 0.186.1, 0.186.0 across en/ko/pt-BR (#3577)

docs/en/changelog.mdx

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+<Update label="Sep 20, 2025">
+  ## v0.193.2
+
+  [View release on GitHub](https://github.com/crewAIInc/crewAI/releases/tag/0.193.2)
+
+  ## What's Changed
+
+  - Updated pyproject templates to use the right version
+
+</Update>
+
+<Update label="Sep 20, 2025">
+  ## v0.193.1
+
+  [View release on GitHub](https://github.com/crewAIInc/crewAI/releases/tag/0.193.1)
+
+  ## What's Changed
+
+  - Series of minor fixes and linter improvements
+
+</Update>
+
+<Update label="Sep 19, 2025">
+  ## v0.193.0
+
+  [View release on GitHub](https://github.com/crewAIInc/crewAI/releases/tag/0.193.0)
+
+  ## Core Improvements & Fixes
+  
+  - Fixed handling of the `model` parameter during OpenAI adapter initialization  
+  - Resolved test duration cache issues in CI workflows  
+  - Fixed flaky test related to repeated tool usage by agents  
+  - Added missing event exports to `__init__.py` for consistent module behavior  
+  - Dropped message storage from metadata in Mem0 to reduce bloat  
+  - Fixed L2 distance metric support for backward compatibility in vector search  
+
+  ## New Features & Enhancements
+  
+  - Introduced thread-safe platform context management  
+  - Added test duration caching for optimized `pytest-split` runs  
+  - Added ephemeral trace improvements for better trace control  
+  - Made search parameters for RAG, knowledge, and memory fully configurable  
+  - Enabled ChromaDB to use OpenAI API for embedding functions  
+  - Added deeper observability tools for user-level insights  
+  - Unified RAG storage system with instance-specific client support  
+
+  ## Documentation & Guides
+  
+  - Updated `RagTool` references to reflect CrewAI native RAG implementation  
+  - Improved internal docs for `langgraph` and `openai` agent adapters with type annotations and docstrings  
+
+</Update>
+
+<Update label="Sep 11, 2025">
+  ## v0.186.1
+
+  [View release on GitHub](https://github.com/crewAIInc/crewAI/releases/tag/0.186.1)
+
+  ## What's Changed
+
+  - Fixed version not being found and silently failing reversion  
+  - Bumped CrewAI version to 0.186.1 and updated dependencies in the CLI  
+
+</Update>
+
+<Update label="Sep 10, 2025">
+  ## v0.186.0
+
+  [View release on GitHub](https://github.com/crewAIInc/crewAI/releases/tag/0.186.0)
+
+  ## What's Changed
+
+  - Refer to the GitHub release notes for detailed changes
+
+</Update>
+
 <Update label="Sep 04, 2025">
   ## v0.177.0