chore: fix linter due to deprecation notice on 'func (r Arguments) Exact(name string) bool'

[vancity-amir]

In fosite release v0.30.3 the following method was deprecated:

// Deprecated: Use ExactOne, Matches or MatchesExact
func (r Arguments) Exact(name string) bool {
	return name == strings.Join(r, " ")
}

Which caused the linter to fail.

[CLAassistant]

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