Inspect adds tool state scopes, fixes usage undercounting
- feat!: tool state scopes so agents running concurrently in one sample keep separate tool state (#5861) UKGovernmentBEIS/inspect_ai
- fix: usage undercounted when a provider call sends several billed requests (#5643) UKGovernmentBEIS/inspect_ai
- fix: gemini-2.5-pro repeating tool calls after a tool result (#5753) UKGovernmentBEIS/inspect_ai