style: Fix RET504 and TRY300 linting issues

Co-Authored-By: Aaron <AJ> Steers <aj@airbyte.io>

Author: devin-ai-integration[bot]

airbyte/_executors/python.py

@@ -196,9 +196,9 @@ def get_installed_version(
             version = None
             for line in output.splitlines():
                 if line.startswith("Version:"):
-                    version = line.split(":", 1)[1].strip()
-                    return version
-            return None
+                    return line.split(":", 1)[1].strip()
+            else:
+                return None
         except Exception:
             if raise_on_error:
                 raise