chore: update ios-client-sdk to 11.5.0

[devin-ai-integration]

Summary

Bumps the committed SPM pin for the LaunchDarkly iOS/macOS client SDK from 11.3.0 to 11.5.0 (latest release within the existing upToNextMajorVersion(11.0.0) requirement). Only Package.resolved changes — the project's package requirement and MACOSX_DEPLOYMENT_TARGET = 12.0 already accommodate 11.5.0 (11.5.0 raised the SDK's macOS platform floor to 12.0).

• latest evidence: https://github.com/launchdarkly/ios-client-sdk/releases/tag/11.5.0 (11.4.0 LDValue hashable, 11.5.0 configurable evaluation exposure deduplication)
• swift-eventsource stays at 3.3.0 — that is the exact dependency of SDK 11.5.0 and the latest release.
• No deprecated LaunchDarkly APIs remain in the example: the SDK's deprecated surfaces are LDValue(integerLiteral:) overload, optional-completion identify, and no-timeout start; the example already uses start(config:context:startWaitSeconds:), observe, and boolVariation.

Validation

Verified statically only — this is an Xcode/macOS project and the audit ran on Linux, so xcodebuild is unavailable. Checks performed:

• resolved 11.5.0's commit SHA directly from the SDK repo tag (5bfd8f8…) so the pin's revision/version pair is consistent.
• read the 11.5.0 Package.swift to confirm platform floors (macOS 12) and the pinned swift-eventsource exact version.
• repo CI (.github/workflows/ci.yml build on macOS 15 / Xcode 16.4 and run.yml build+run flag-evaluation assertion) will exercise the actual build and runtime flag evaluation on this PR.

Limitations

Could not run the app locally (no macOS/Xcode); relying on repo CI for build and runtime verification.

Link to Devin session: https://app.devin.ai/sessions/fe5831e2e4834224a678d4bcdb1c87bb

[devin-ai-integration]

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[devin-ai-integration]

@cursor review