cli/command/container: remove redundant capturing of loop vars (copyloopvar)

go1.22 and up now produce a unique variable in loops, tehrefore no longer
requiring to capture the variable manually;

    cli/command/container/opts.go:765:3: The copy of the 'for' variable "n" can be deleted (Go 1.22+) (copyloopvar)
            n := n
            ^

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

cli/command/container/opts.go

@@ -762,7 +762,6 @@ func parseNetworkOpts(copts *containerOptions) (map[string]*networktypes.Endpoin
 	}
 
 	for i, n := range copts.netMode.Value() {
-		n := n
 		if container.NetworkMode(n.Target).IsUserDefined() {
 			hasUserDefined = true
 		} else {