chore: Enable rector cache

[samsonasik]

Description

Let's try enable rector cache based on https://getrector.com/documentation/cache-in-ci

Checklist:

• Securely signed commits
• Component(s) with PHPDoc blocks, only if necessary or adds value
• Unit testing, with >80% coverage
• User guide updated
• Conforms to style guide

[samsonasik]

It seems working ok with merge multiple paths to single:

Before Time: 2m 43s

ref https://github.com/codeigniter4/CodeIgniter4/actions/runs/8403997993/job/23015107946#step:11:1

After Time: 2s

ref https://github.com/codeigniter4/CodeIgniter4/actions/runs/8404013987/job/23015144926?pr=8655#step:11:1

Ready to merge 👍

[kenjis]

LGTM!

[kenjis]

@samsonasik Can you update .github and devkit repositories?

[samsonasik]

@kenjis yes, I created PR:

• chore: Add rector cache to workflows and template rector.php devkit#128

for it.