chore(deps): update dependency @ai-sdk/google to v1.2.22

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@ai-sdk/google (source)	1.2.18 → 1.2.22

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Release Notes

vercel/ai (@​ai-sdk/google)

v1.2.22

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Patch Changes

• aeaf1cd: fix missing systemInstruction in object-tool mode. The object-tool generation mode now properly includes system instructions in API requests, matching the behavior of regular and object-json modes

v1.2.21

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Patch Changes

• ce1625d: removes (unsupported) additionalProperties from the Schema sent in the request payloads to Google APIs

v1.2.20

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Patch Changes

• d532ac3: Support tool schemas that allow additional properties (e.g z.record(z.string()))
• 08ee85d: feat(providers/google): Add support for Gemini 2.5 Pro and Gemini 2.5 Flash (now stable)

v1.2.19

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Patch Changes

• f262012: fix (provider/google): prevent error when thinking signature is used

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