chore: modernize go sources (#24896)

server/modbus/handler.go

@@ -82,7 +82,7 @@ func (h *handler) bytesToBoolResult(op string, qty uint16, b []byte, err error)
 
 LOOP:
 	for _, bb := range b {
-		for bit := 0; bit < 8; bit++ {
+		for bit := range 8 {
 			if len(res) >= int(qty) {
 				break LOOP
 			}

server/modbus/proxy_test.go

@@ -44,7 +44,7 @@ func TestConcurrentRead(t *testing.T) {
 				require.NoError(t, err)
 
 				if err == nil {
-					for u := uint16(0); u < qty; u++ {
+					for u := range qty {
 						assert.Equal(t, addr^uint16(id)^u, binary.BigEndian.Uint16(b[2*u:]))
 					}
 				}