chore: bump Go version to 1.26.0 (#7856)

plugin/pkg/dnsutil/reverse.go

@@ -60,7 +60,7 @@ func reverse6(slice []string) string {
 		j := len(slice) - i - 1
 		slice[i], slice[j] = slice[j], slice[i]
 	}
-	slice6 := []string{}
+	slice6 := make([]string, 0, len(slice)/4)
 	for i := range len(slice) / 4 {
 		slice6 = append(slice6, strings.Join(slice[i*4:i*4+4], ""))
 	}

plugin/pkg/fall/fall.go

@@ -32,7 +32,7 @@ func (f F) Through(qname string) bool {
 
 // setZones will set zones in f.
 func (f *F) setZones(zones []string) {
-	z := []string{}
+	z := make([]string, 0, len(zones))
 	for i := range zones {
 		z = append(z, plugin.Host(zones[i]).NormalizeExact()...)
 	}

plugin/pkg/parse/host.go

@@ -30,7 +30,7 @@ func stripZone(host string) string {
 // and in case of filename a resolv.conf like file is (assumed) and parsed and
 // the nameservers found are returned.
 func HostPortOrFile(s ...string) ([]string, error) {
-	var servers []string //nolint:prealloc // impossible to know the final length upfront
+	var servers []string
 	for _, h := range s {
 		trans, host := Transport(h)
 		if len(host) == 0 {