Make script in release.py a constant

release.py

@@ -17,7 +17,7 @@ version = get_release_version()
 
 input(f"The current version is v{version}. Is this properly bumped? (Enter/Ctrl+C)")
 
-script = f"""
+SCRIPT = f"""
     docker build -t registry.nyeki.dev/nyeki/api:latest .
     docker push registry.nyeki.dev/nyeki/api:latest
     docker tag registry.nyeki.dev/nyeki/api:latest registry.nyeki.dev/nyeki/api:v{version}
@@ -30,6 +30,6 @@ git push origin main
     git push origin v{version}
 """
 
-os.system(script)
+os.system(SCRIPT)
 
 print(f"v{version} was released. Congratulations!")