Bump Npgsql from 4.1.3 to 4.1.3.1
Bumps [Npgsql](https://github.com/npgsql/npgsql) from 4.1.3 to 4.1.3.1.
- [Release notes](https://github.com/npgsql/npgsql/releases)
- [Commits](https://github.com/npgsql/npgsql/compare/v4.1.3...v4.1.3.1)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>