setup git credentials in bump-n-release CI workflow

Author: 2bndy5

.github/workflows/bump_version.py

@@ -35,6 +35,7 @@
 
 import argparse
 from pathlib import Path
+from os import environ
 import subprocess
 import re
 
@@ -135,6 +136,17 @@ def main():
     subprocess.run(["git", "add", "--all"], check=True)
     tag = "v" + Updater.new_version
     subprocess.run(["git", "commit", "-m", f"Bump version to {tag}"], check=True)
+    if environ.get("CI", "false") == "true":
+        # configure git credentials on CI runner
+        # NOTE: this is design to fail locally with `KeyError`
+        git_config = {"name": environ["GITHUB_ACTOR"]}
+        git_config["email"] = (
+            f'{environ["GITHUB_ACTOR_ID"]}+{git_config["name"]}@users.noreply.github.com'
+        )
+        for key, value in git_config.items():
+            subprocess.run(
+                ["git", "config", "--global", f"user.{key}", value], check=True
+            )
     try:
         subprocess.run(["git", "push"], check=True)
     except subprocess.CalledProcessError as exc: