Trigger the required actions from a single workflow

.github/workflows/main.yml

@@ -0,0 +1,21 @@
+---
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+  workflow_dispatch:
+
+# Cancel already running workflows if new ones are scheduled
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  validation:
+    uses: ./.github/workflows/validation.yml
+
+  unit-tests:
+    uses: ./.github/workflows/unit-tests.yml

.github/workflows/unit-tests.yml

@@ -1,16 +1,6 @@
 name: Unit-Tests
 
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-  workflow_dispatch:
-
-# Cancel already running workflows if new ones are scheduled
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: true
+on: workflow_call
 
 jobs:
   unit-tests:

.github/workflows/validation.yml

@@ -1,15 +1,6 @@
 name: Validation
 
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-  workflow_dispatch:
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: true
+on: workflow_call
 
 env:
   PRE_COMMIT_HOME: "/home/runner/.cache/pre-commit"