chore(deps): update mcp toolbox server for integration tests to 0.28.0

[renovate-bot]

This PR contains the following updates:

Package	Update	Change
googleapis/genai-toolbox	minor	0.27.0 → 0.28.0

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Release Notes

googleapis/genai-toolbox (googleapis/genai-toolbox)

v0.28.0

Compare Source

Features

• Add polling system to dynamic reloading (#​2466) (fcaac9b)
• Added basic template for sdks doc migrate (#​1961) (87f2eaf)
• dataproc: Add dataproc source and list/get clusters/jobs tools (#​2407) (cc05e57)
• sources/postgres: Add configurable pgx query execution mode (#​2477) (57b77bc)
• sources/redis: Add TLS support for Redis connections (#​2432) (d6af290)
• tools/looker: Enable Get All Lookml Tests, Run LookML Tests, and Create View From Table tools for Looker (#​2522) (e01139a)
• tools/looker: Tools to list/create/delete directories (#​2488) (0036d8c)
• ui: Make tool list panel resizable (#​2253) (276cf60)

Bug Fixes

• ci: Add path for forked PR unit test runs (#​2540) (04dd2a7)
• Deflake alloydb omni (#​2431) (62b8309)
• docs/adk: Resolve dependency duplication (#​2418) (4d44abb)
• docs/langchain: Fix core at 0.3.0 and align compatible dependencies (#​2426) (36edfd3)
• Enforce required validation for explicit null parameter values (#​2519) (d5e9512)
• oracle: Enable DML operations and resolve incorrect array type error (#​2323) (72146a4)
• server/mcp: Guard nil dereference in sseManager.get (#​2557) (e534196), closes #​2548
• tests/postgres: Implement uuid-based isolation and reliable resource cleanup (#​2377) (8a96fb1)
• tests/postgres: Restore list_schemas test and implement dynamic owner (#​2521) (7041e79)
• tests: Resolve LlamaIndex dependency conflict in JS quickstart (#​2597) (ac11f5a)

OS/Architecture	Description	SHA256 Hash
linux/amd64	For Linux systems running on Intel/AMD 64-bit processors.	d4d53bfcf05d3d495436fb724c5072c61d2ce5aaa3670dad4cbefa957ada4e62
darwin/arm64	For macOS systems running on Apple Silicon (M1, M2, M3, etc.) processors.	2cde42d8a80cd2bdbe0d73b78a5b8ebe76923ea590a56d25ee54a4fc12025b3c
darwin/amd64	For macOS systems running on Intel processors.	ec0c2237618f189bc6224acfba4a1fe5fac06b5bb69770ebf5b3578d7332a450
windows/amd64	For Windows systems running on Intel/AMD 64-bit processors.	a1816cffb86f56b13e1f216d72a7a2c16e203304ff1bc581871add3c0786d8c7

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