Update testing workflow

Update: 1. Renaming the workflow, 2. Add trigger on manual start, 3. Add Python 3.12 version to be tested on, 4. Update the `setup-python` action version (4 -> 5)

.github/workflows/test.yml

@@ -1,20 +1,22 @@
-name: Python package
+name: Run the tests
 
-on: [push]
+on:
+  push:
+  workflow_dispatch:
 
 jobs:
   build:
 
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.11"]
+        python-version: ["3.11", "3.12"]
 
     steps:
       - uses: actions/checkout@v3
 
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}