Fix release-xcframework failure from non-executable libcurl build script

[Copilot]

The release-xcframework GitHub Actions job was failing before the framework build started because the release workflow attempted to execute Objectively's build-libcurl.sh directly and hit a permission error on checkout. This change removes that dependency on the script's executable bit.

• Workflow fix

  • Update the release workflow to invoke the libcurl xcframework build script via bash instead of executing it directly.
  • Preserve the existing release flow and artifact outputs; only the script invocation changes.

• Failure mode addressed

  • Makes the workflow robust to upstream checkout permission/mode differences for Frameworks/build-libcurl.sh.

- name: Build libcurl.xcframework
  working-directory: Objectively
  run: bash ./Frameworks/build-libcurl.sh

[Copilot]

Pull request overview

This PR fixes the release-xcframework GitHub Actions job by removing reliance on the executable bit of Objectively’s Frameworks/build-libcurl.sh script, invoking it via bash instead.

Changes:

• Update the release workflow step to run build-libcurl.sh with bash rather than executing the script directly.