Fix missing value in package upgrade output (#256)

Author: chayac

src/dbt_autofix/package_upgrade.py

@@ -71,9 +71,9 @@ def package_upgrade_logs(self):
         logs.append(current_version_compat)
         if self.upgraded and self.upgraded_version and self.upgraded_version_compatibility_state is not None:
             logs.append(f"Upgraded version is compatible: {self.upgraded_version_compatibility_state.value}")
-        elif self.compatible_version is not None:
+        elif self.compatible_version is not None and self.upgraded_version_compatibility_state is not None:
             logs.append(
-                f"Compatible version is available ({self.compatible_version}): {self.upgraded_version_compatibility_state}"
+                f"Compatible version is available ({self.compatible_version}): {self.upgraded_version_compatibility_state.value}"
             )
         return logs