fix: cap OneTrust SDK versions to avoid ObjC selector mismatch

[denischilik]

Background

CI started failing after newer OneTrust SDK releases were resolved by default.
Those versions no longer expose the Objective-C selector expected by the OneTrust kit integration.

What Has Changed

• Added an upper-only cap for OneTrust SPM dependencies (< 202503.0.0) in the kit package manifest.
• Added an upper-only cap for CocoaPods OneTrust dependencies (< 202503.0.0) in the kit podspec.
• Kept runtime integration code unchanged and scoped the fix to dependency constraints only.

Screenshots/Video

N/A

Checklist

• I have performed a self-review of my own code.
• I have made corresponding changes to the documentation.
• I have added tests that prove my fix is effective or that my feature works.
• I have tested this locally.

Additional Notes

This update is intended to stabilize CI by preventing automatic resolution to OneTrust SDK versions where the ObjC selector mismatch occurs.

[cursor]

PR Summary

Low Risk
Low risk: this only tightens SPM/CocoaPods dependency version constraints to avoid resolving incompatible OneTrust releases, with no runtime code changes.

Overview
Prevents CI/build breakages from newer OneTrust releases by capping resolved OneTrust SDK versions.

Updates Package.swift to limit both iOS/tvOS OTPublishersHeadlessSDK* SPM dependencies to < 202503.0.0, and updates mParticle-OneTrust.podspec to apply the same < 202503.0.0 upper bound for the CocoaPods OneTrust-CMP-* dependencies.

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[github-actions]

📦 SDK Size Impact Report

Measures how much the SDK adds to an app's size (with-SDK minus without-SDK).

Metric	Target Branch	This PR	Change
App Bundle Impact	1.77 MB	1.77 MB	+N/A
Executable Impact	848 bytes	848 bytes	+N/A
XCFramework Size	6.44 MB	6.44 MB	+N/A

➡️ SDK size impact change is minimal.

Raw measurements

Target branch (main):

{"baseline_app_size_kb":84,"baseline_executable_size_bytes":75464,"with_sdk_app_size_kb":1896,"with_sdk_executable_size_bytes":76312,"sdk_impact_kb":1812,"sdk_executable_impact_bytes":848,"xcframework_size_kb":6596}

This PR:

{"baseline_app_size_kb":84,"baseline_executable_size_bytes":75464,"with_sdk_app_size_kb":1896,"with_sdk_executable_size_bytes":76312,"sdk_impact_kb":1812,"sdk_executable_impact_bytes":848,"xcframework_size_kb":6596}