The keyboard shortcut is Shift+Alt + Up/Down, and it’s used to move items up or down.

To use this feature, you don’t even have to select the row or item that you want to move… just make sure your cursor is focused on the element or row you want to move:

Use the Shift+Alt+Up key, and the row where the cursor is will immediately move up:

This also works for other elements, such as paragraphs…

It also works with items in a bulleted list, and probably many other elements as well. This is one of those keyboard shortcuts that you can’t live without once you learn it.