[ci] Try to install autobahn testsuite in pypy2.7 env

.github/workflows/autobahn.yaml

@@ -0,0 +1,13 @@
+name: autobahn testsuit report
+on: [push, pull_request]
+
+jobs:
+  ubuntu:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: 'pypy2.7'
+      - run: pip install -U pip
+      - run: pip install autobahntestsuit==0.8.2