adds trailing comma to migrations env.py file

[kjaymiller]

There is a minor update to the code that was found in a ruff format .

adds trailing comma: COM812

Output

diff --git a/src/flaskapp/migrations/env.py b/src/flaskapp/migrations/env.py
index b409dce..f363acd 100644
--- a/src/flaskapp/migrations/env.py
+++ b/src/flaskapp/migrations/env.py
@@ -91 +91 @@ def run_migrations_online():
-            **current_app.extensions["migrate"].configure_args
+            **current_app.extensions["migrate"].configure_args,