libs/genai/v3.0.2

• Add support for Gemini's improved structured output #1288
• Add validation for empty contents in Gemini API requests #1298
• Fix blocking operation on import #1292
• Fix base_url #1293
• Fix embeddings task_type usage #1302

Changes since libs/genai/v3.0.1

chore: fix links (#1311)
release(genai): 3.0.2 (#1309)
feat(genai): improved structured output (#1288)
chore(vertexai,genai,community): update project URLs in pyproject.toml and README.md files (#1308)
chore(genai,vertexai): nits (#1307)
revert: "extract and include metadata" (#1306)
fix(genai): resolve blocking I/O in async contexts (#1264)
fix(genai): Add validation for empty contents in Gemini API requests (#1298)
refactor(genai): update thinking model test to use parameterized inputs (#1219)
fix(genai): use task_type_to_use variable in embed_query methods (#1302)
fix: base_url behavior, and improve checks and docstrings for base_url and api_transport behavior (#1293)
docs(genai): enhance Jupyter notebook example for image generation (#1300)
test(genai): enhance assertions for structured output in chat model tests (#1295)
docs(genai): update invoke docstring to clarify code_execution parameter (#1296)
fix(genai): move importlib.metadata.version into module scope (#1292)
chore: cleanup (#1290)