Update dependencies

This update includes a newer version of the RTMP server that supports
the enhances RTMP specification, i.e. HEVC, VP9, and AV1.

vendor/github.com/labstack/gommon/random/random.go

@@ -1,48 +0,0 @@
-package random
-
-import (
-	"math/rand"
-	"strings"
-	"time"
-)
-
-type (
-	Random struct {
-	}
-)
-
-// Charsets
-const (
-	Uppercase    = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
-	Lowercase    = "abcdefghijklmnopqrstuvwxyz"
-	Alphabetic   = Uppercase + Lowercase
-	Numeric      = "0123456789"
-	Alphanumeric = Alphabetic + Numeric
-	Symbols      = "`" + `~!@#$%^&*()-_+={}[]|\;:"<>,./?`
-	Hex          = Numeric + "abcdef"
-)
-
-var (
-	global = New()
-)
-
-func New() *Random {
-	rand.Seed(time.Now().UnixNano())
-	return new(Random)
-}
-
-func (r *Random) String(length uint8, charsets ...string) string {
-	charset := strings.Join(charsets, "")
-	if charset == "" {
-		charset = Alphanumeric
-	}
-	b := make([]byte, length)
-	for i := range b {
-		b[i] = charset[rand.Int63()%int64(len(charset))]
-	}
-	return string(b)
-}
-
-func String(length uint8, charsets ...string) string {
-	return global.String(length, charsets...)
-}