fix: remove an unused import in the release script

Author: leodevian

changelog.d/+a92fd53c.fixed.md

@@ -0,0 +1 @@
+Remove an unused import in `scripts/release.py` when the project version is provided dynamically.

template/scripts/release.py.jinja

@@ -19,8 +19,8 @@ from __future__ import annotations
 import argparse
 {%- if not dynamic_version %}
 import enum
-{%- endif %}
 import json
+{%- endif %}
 import subprocess
 import sys
 from contextlib import contextmanager