feat: switching to the release only workflow

[geekbrother]

Description

This PR switches to the GitHub release-only workflow instead of the Cargo.toml release bump to avoid creating new commits during the release process in the branch-protected repos.

Merging requirements

• Change the Walletconnect/actions branch to the release tag when the dependency merged.

[Copilot]

Pull Request Overview

This PR switches from a Cargo.toml version bump workflow to a GitHub release-only workflow to avoid creating commits during releases in branch-protected repositories.

• Changes the GitHub Actions workflow to use a release-only version update action
• Updates the action reference to use a feature branch instead of a tagged version

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