Update ObservationBridge to 0.11.1

[lynnswap]

Purpose

• Update ObservationBridge to v0.11.1 for didSet observation delivery fixes.

Changes

• Bump the ObservationBridge package requirement from 0.11.0 to 0.11.1.
• Refresh both SwiftPM resolver files to pin ObservationBridge at 0.11.1 / 859e630ec6633fa3cb632df308eec6c041207888.

Testing

• swift package resolve
• xcodebuild -resolvePackageDependencies -project Tools/ReviewMonitor/CodexReviewMonitor.xcodeproj -scheme CodexReviewMonitor
• git diff --check
• swift test --build-system swiftbuild --no-parallel
• xcodebuild test -project Tools/ReviewMonitor/CodexReviewMonitor.xcodeproj -scheme CodexReviewMonitor -destination 'platform=macOS,arch=arm64' CODE_SIGNING_ALLOWED=NO CODE_SIGNING_REQUIRED=NO\n- codex-review uncommitted changes: findingCount 0