ci: make sure Python and Pygments are available

Author: ramsey

.github/workflows/continuous-integration.yml

@@ -71,6 +71,14 @@ jobs:
       - name: "Checkout repository"
         uses: "actions/checkout@v4"
 
+      - name: "Install Python"
+        uses: "actions/setup-python@v5"
+        with:
+          python-version: "3.13"
+
+      - name: "Install Python Pygments"
+        run: "pip install Pygments==2.19.1"
+
       - name: "Install PHP"
         uses: "shivammathur/setup-php@v2"
         with:
@@ -103,6 +111,14 @@ jobs:
       - name: "Checkout repository"
         uses: "actions/checkout@v4"
 
+      - name: "Install Python"
+        uses: "actions/setup-python@v5"
+        with:
+          python-version: "3.13"
+
+      - name: "Install Python Pygments"
+        run: "pip install Pygments==2.19.1"
+
       - name: "Install PHP"
         uses: "shivammathur/setup-php@v2"
         with: