fix(bump): Add types for defs to AreaBumpSvgProps

[recurser]

It looks like I missed this in #926 sorry - it currently complains about a missing type for defs:

      Property 'defs' does not exist on type 'IntrinsicAttributes & IntrinsicClassAttributes<ResponsiveAreaBump> & Readonly<AreaBumpSvgProps> & Readonly<...>'.
    69 |             colors={colors}
    70 |             data={data}
  > 71 |             defs={defs}
       |             ^
    72 |             endLabelTextColor={labelColor}
    73 |             fill={fill}
    74 |             startLabelTextColor={labelColor}

[wyze]

Thanks!