run plugeth test on arm too

.gitea/workflows/test-fixturenet-plugeth.yml

@@ -9,7 +9,10 @@ on:
 jobs:
   test:
     name: "Test fixturenet-plugeth stack"
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        os: [ubuntu-latest, ubuntu-latest-arm]
+    runs-on: ${{ matrix.os }}
     steps:
       - name: "Clone project repository"
         uses: actions/checkout@v3
@@ -19,12 +22,12 @@ jobs:
         if: ${{ runner.arch == 'arm64' && runner.os == 'Linux' }}
         uses: deadsnakes/action@v3.0.1
         with:
-          python-version: '3.11'
+          python-version: 3.11
       - name: "Install Python cases other than ARM on Linux"
         if: ${{ ! (runner.arch == 'arm64' && runner.os == 'Linux') }}
         uses: actions/setup-python@v4
         with:
-          python-version: '3.11'
+          python-version: 3.11
       - name: "Print Python version"
         run: python3 --version
       - name: "Install stack orchestrator"