Update Python scripts and misc utilities

.github/workflows/build_test_py.yaml

@@ -0,0 +1,38 @@
+name: Test Python
+run-name: Test Python PR${{ github.event.number }}
+
+# Separate GitHub Actions workflow to run the Python tests only when we have
+# Python source changes in the PR.
+
+on:
+  workflow_dispatch:
+  pull_request:
+    branches:
+      - main
+    paths:
+      - '**/*.py'
+
+jobs:
+  test-python:
+    name: Python tests
+    runs-on: ubuntu-24.04
+    steps:
+      - name: Git checkout
+        uses: actions/checkout@v6
+        with:
+          submodules: 'true'
+
+      - name: Update apt packages
+        run: sudo apt-get update
+
+      - name: Install Python
+        run: sudo apt-get install python3 python-is-python3
+
+      - name: Get Python modules
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install numpy Pillow mypy pylint pycodestyle
+
+      - name: Run Python tests
+        run: |
+          python ./Test/astc_test_python.py

.github/workflows/post_weekly_release.yaml

@@ -111,7 +111,7 @@ jobs:
 
   build-ubuntu-x64:
     name: Ubuntu x64
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
       - name: Git checkout
         uses: actions/checkout@v6
@@ -322,7 +322,7 @@ jobs:
   prepare-release:
     if: ${{ (startsWith(github.event.ref, 'refs/tags/')) && (github.repository_owner == 'Arm-software') }}
     name: Prepare release
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     needs: [sign-binaries, build-ubuntu-x64]
     steps:
       - name: Git checkout

.mypy.ini

@@ -0,0 +1,4 @@
+[mypy]
+exclude = pycodestyle
+ignore_missing_imports = True
+disable_error_code = annotation-unchecked