CI benchmark doesn't work anymore

[pelletier]

~/src/github.com/pelletier/go-toml
flag provided but not defined: -csv
Usage: benchstat [flags] inputs...

benchstat computes statistical summaries and A/B comparisons of Go
benchmarks. It shows benchmark medians in a table with a row for each
benchmark and a column for each input file. If there is more than one
input file, it also shows A/B comparisons between the files. If a
difference is likely to be noise, it shows "~".

For details, see https://pkg.go.dev/golang.org/x/perf/cmd/benchstat.
  -alpha α
    	consider change significant if p < α (default 0.05)
  -col projection
    	split results into columns by distinct values of projection (default ".file")
  -confidence level
    	confidence level for ranges (default 0.95)
  -filter query
    	use only benchmarks matching benchfilter query (default "*")
  -format format
    	print results in format:
    	  text - plain text
    	  csv  - comma-separated values (warnings will be written to stderr)
    	 (default "text")
  -ignore keys
    	ignore variations in keys
  -row projection
    	split results into rows by distinct values of projection (default ".fullname")
  -table projection
    	split results into tables by distinct values of projection (default ".config")
Traceback (most recent call last):
  File "<stdin>", line 23, in <module>
IndexError: list index out of range

[pelletier]

Fixed by #905