text: Title: Format and lint files in `mlflow/store/db_migrations`
  Body: ### Summary
  
  The DB migration scripts are not auto-generarted, safe to format and lint them.
  
  ```diff
  diff --git a/pyproject.toml b/pyproject.toml
  index 9ebc52ce3..e321bf6ce 100644
  --- a/pyproject.toml
  +++ b/pyproject.toml
  @@ -171,7 +171,6 @@ extend-exclude = [
     "mlflow/ml_package_versions.py",
     "mlflow/server/graphql/autogenerated_graphql_schema.py",
     "mlflow/server/js",
  -  "mlflow/store/db_migrations",
     "tests/protos",
   ]
  ```
  
  ### Notes
  
  - Make sure to open a PR from a **non-master** branch.
  - Sign off the commit using the `-s` flag when making a commit:
  
    ```sh
    git commit -s -m "..."
             # ^^ make sure to use this
    ```
  
  - Include `#{issue_number}` (e.g. `#123`) in the PR description when opening a PR.
  