Update module github.com/haproxytech/config-parser/v4 to v4.2.1

Author: renovate[bot]

go.mod

@@ -4,7 +4,7 @@ go 1.20
 
 require (
 	github.com/ThreeDotsLabs/watermill v1.3.2
-	github.com/haproxytech/config-parser/v4 v4.1.0
+	github.com/haproxytech/config-parser/v4 v4.2.1
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/shurcooL/graphql v0.0.0-20220606043923-3cf50f8a0a29
 	github.com/spf13/cobra v1.7.0