configure workflow to run tests/test-build

Author: smdn

.github/workflows/test-build.yml

@@ -53,7 +53,7 @@ jobs:
     - name: Install python
       uses: actions/setup-python@v5.4.0
       with:
-        python-version: '3.11'
+        python-version: '3.12.3'
 
     - name: Install PlatformIO Core
       run: |
@@ -65,4 +65,4 @@ jobs:
       run: |
         $verbose = '${{ inputs.verbose }}' -ieq 'true'
 
-        pio run
+        tests/test-build/run.sh