Update pyproject.toml

Author: blink1073

pyproject.toml

@@ -30,7 +30,7 @@ tag_template = "v{new_version}"
 
 [[tool.tbump.file]]
 src = "jupyter_server/_version.py"
-version_template = '{major}, {minor}, {patch}, "{channel}", "{release}"'
+version_template = '({major}, {minor}, {patch}, "{channel}", "{release}")'
 
 [[tool.tbump.field]]
 name = "channel"