update SO ref

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

@@ -28,15 +28,7 @@ jobs:
       - name: "Print Python version"
         run: python3 --version
       - name: "Install stack orchestrator"
-        # FIXME: merge SO fixes and revert
-        # run: ./scripts/install-so.sh
-        uses: actions/checkout@v3
-        with:
-          repository: cerc-io/stack-orchestrator
-          ref: roysc/fix-various
-          path: .tools/stack-orchestrator
-      - name: "Install stack orchestrator"
-        run: pip3 install .tools/stack-orchestrator
+        run: ./scripts/install-so.sh
       - name: "Run stack tests"
         run: |
          PATH=$PATH:~/bin