Make the cell bigger or the text smaller.
I don't know why the cell bottom line not moving! (My font size need 12pt, so I need change the cell and the problem is I cell bottom line not moving))
Perhaps the dimensions are set to "exactly"?
You need to increase the maximum allowed row height: https://helpx.adobe.com/indesign/using/formatting-tables.html#resize_columns_rows_and_tabl es
"The maximum row height is determined by the Maximum setting in the Rows And Columns section of the Cell Options dialog box."