feat: fix preserve escaped newlines in frontmatter & update tests & ci workflows (#6783)

.github/workflows/unit_tests.yml

@@ -0,0 +1,37 @@
+name: Unit Tests
+
+on:
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - 'README*.md'
+      - 'changelogs/**'
+      - 'dashboard/**'
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  unit-tests:
+    name: Run pytest suite
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Set up Python
+        uses: actions/setup-python@v6
+        with:
+          python-version: '3.12'
+
+      - name: Install uv
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install uv
+
+      - name: Run tests
+        run: |
+          chmod +x scripts/run_pytests_ci.sh
+          bash ./scripts/run_pytests_ci.sh ./tests