Run CI jobs for all directories: (#173)

## Description


This works around an issue where a change in the `kernel/` directory doesn't trigger the required validation check in GitHub.

## Why is this needed



Fixes: #145 

## How Has This Been Tested?





## How are existing users impacted? What migration steps/scripts do we need?





## Checklist:

I have:

- [ ] updated the documentation and/or roadmap (if required)
- [ ] added unit or e2e tests
- [ ] provided instructions on how to upgrade

Author: mergify[bot]

.github/workflows/ci.yaml

@@ -1,11 +1,7 @@
 name: For each PR and Push
 on:
   pull_request:
-    paths-ignore:
-      - kernel/**
   push:
-    paths-ignore:
-      - kernel/**
 jobs:
   validation:
     runs-on: ubuntu-20.04