Use matrix for self-hosted python.yaml workflow

.github/workflows/python.yaml

@@ -6,11 +6,15 @@ on:
 
 jobs:
   build:
-    runs-on: 'ubuntu-latest'
     strategy:
+      fail-fast: false
       matrix:
         python-version: ['3.12']
-
+        runner:
+          - 'ubuntu-latest'
+          - 'self-hosted'
+
+    runs-on: ${{ matrix.runner }}
     steps:
       - uses: 'actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744' # ratchet:actions/checkout@v3
       - name: 'Set up Python ${{ matrix.python-version }}'

.github/workflows/pytype.yaml

@@ -5,10 +5,16 @@ on:
 
 jobs:
   check:
-    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        runner:
+          - 'ubuntu-latest'
+          - 'self-hosted'
+    runs-on: ${{ matrix.runner }}
     steps:
     - uses: actions/checkout@v2
     - name: pytypes checker
       uses: theahura/pytypes-action@main
       with:
-        args: -d import-error
+        args: -d import-error