feat: migrate to 100% automated semantic-release like Casbin-RS

[Copilot]

Problem

The current CI setup uses release-plz which creates manual PRs for version bumps (like #8), requiring manual review and merging. This creates unnecessary overhead and clutters the git history with bot-generated PRs.

Solution

This PR migrates the release workflow to use the same fully automated semantic-release pattern as Casbin-RS, eliminating manual PR creation entirely.

Changes

• Replaced .github/workflows/release.yml to use casbin-rs/semantic-release-action-rust reusable workflow
• Removed the release-plz-pr job that was creating unwanted PRs
• Removed the release-plz-release job
• Now uses semantic-release for 100% automated releases based on conventional commits

How It Works

1. Developer pushes commits to master using conventional commit format (feat:, fix:, chore:, etc.)
2. CI workflow runs tests and checks
3. After CI passes, the Auto Release workflow automatically:
   • Analyzes commit messages
   • Determines the next version number (major/minor/patch)
   • Generates changelog
   • Creates git tags
   • Publishes to crates.io

No manual intervention or PR approvals needed!

Benefits

• ✅ No more manual PR creation - fully automated releases
• ✅ Consistent release process across all casbin-rs repositories
• ✅ Cleaner git history without bot-created PRs
• ✅ Semantic versioning handled automatically
• ✅ Reduces maintenance overhead

Example

# Developer commits with conventional commit format
git commit -m "feat: add new feature"      # → triggers minor version bump
git commit -m "fix: resolve bug"           # → triggers patch version bump
git commit -m "feat!: breaking change"     # → triggers major version bump

# After CI passes, semantic-release automatically:
# - Updates version in Cargo.toml
# - Generates CHANGELOG.md
# - Creates git tag
# - Publishes to crates.io

Resolves the issue mentioned in the original request about eliminating useless PRs like #8.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• https://api.github.com/repos/casbin-rs/semantic-release-action-rust/tags
  • Triggering command: curl -s REDACTED (http block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>[ci] migrate to 100% fully automated semantic-release like Casbin-RS</issue_title>
<issue_description>The CI in this repo is not good, it still generates useless PRs like: #8

Need to migrate to the CI solution of 100% fully automated semantic-release like CasbinRS: https://github.com/casbin/casbin-rs</issue_description>

Comments on the Issue (you are @copilot in this section)

Fixes #9

---

💬 Share your feedback on Copilot coding agent for the chance to win a $200 gift card! Click here to start the survey.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[github-actions]

🎉 This PR is included in version 0.2.0 🎉

The release is available on:

• v0.2.0
• GitHub release

Your semantic-release bot 📦🚀