Always fail to find changed charts with deeply nested (>2 levels) charts_dir

[LukeCarrier]

It looks as though this code will fail when the charts directory is nested below another directory:

chart-releaser-action/cr.sh

Lines 202 to 209 in 06d81fa

	local fields
	if [[ "$charts_dir" == '.' ]]; then
	fields='1'
	else
	fields='1,2'
	fi
	cut -d '/' -f "$fields" <<< "$changed_files" | uniq | filter_charts

For an example of this, see rook/rook, where charts_dir is cluster/charts:

• Structure
• Failed workflow

Would you accept a PR to fix this?

[LukeCarrier]

Looks like cut supports specifying a range (e.g. 1-$x, where $x is the number of path components). We could count the number of / in $charts_dir to get that.