Updated files with 'repo_helper'.

Author: repo-helper[bot]

.github/workflows/python_ci.yml

@@ -38,7 +38,7 @@ jobs:
           - {python-version: "pypy-3.6", testenvs: "pypy36", experimental: False}
           - {python-version: "pypy-3.7", testenvs: "pypy37,build", experimental: False}
           - {python-version: "pypy-3.8", testenvs: "pypy38,build", experimental: False}
-          - {python-version: "pypy-3.9", testenvs: "pypy39,build", experimental: True}
+          - {python-version: "pypy-3.9-v7.3.15", testenvs: "pypy39,build", experimental: True}
 
     steps:
       - name: Checkout 🛎️