Run GitHub Actions on PRs

[tagliala]

Hi, I've noticed that PRs do not run actions, so they can introduce issues that will only discovered when merged to master

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Also:

• Set explicit permissions to read for better security
• Update actions

Ref: https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#permissions

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Blocked by

• [x] jamesmartin/inline_svg_test_app#23
• [ ] #156

[tagliala]

I'm facing some issues related to the usage of an old version of webpacker which still uses node-sass, and Python 2.7 is not available anymore. I guess that https://github.com/jamesmartin/inline_svg_test_app/tree/rails6-webpacker needs an updated, but then we should use webpacker 5.x

[jamesmartin]

Thanks for opening this PR. New branch created in the inline_svg_test_app repo for rails7-shakapacker so you can get the integration tests running.

[tagliala]

@jamesmartin thanks, really appreciate. I'll move forward with this, then we can drop

[tagliala]

@jamesmartin all green here, no changes to production code, should be safe to merge and will fix the failing badge

[jamesmartin]

Thanks again, @tagliala! ✨