chore: fix golangci-lint errors

cmd/version.go

@@ -15,7 +15,7 @@ func init() {
 var versionCmd = &cobra.Command{
 	Use:   "version",
 	Short: "Print the version number",
-	Run: func(cmd *cobra.Command, args []string) {
+	Run: func(_ *cobra.Command, _ []string) {
 		fmt.Println("File Browser v" + version.Version + "/" + version.CommitSHA)
 	},
 }