Bump github.com/mattermost/mattermost-server/v6 from 6.1.0 to 6.3.0 (#1686)

Bumps [github.com/mattermost/mattermost-server/v6](https://github.com/mattermost/mattermost-server) from 6.1.0 to 6.3.0.
- [Release notes](https://github.com/mattermost/mattermost-server/releases)
- [Changelog](https://github.com/mattermost/mattermost-server/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mattermost/mattermost-server/compare/v6.1.0...v6.3.0)

---
updated-dependencies:
- dependency-name: github.com/mattermost/mattermost-server/v6
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

vendor/github.com/vmihailenco/msgpack/v5/decode_string.go

@@ -0,0 +1,192 @@
+package msgpack
+
+import (
+	"fmt"
+	"reflect"
+
+	"github.com/vmihailenco/msgpack/v5/msgpcode"
+)
+
+func (d *Decoder) bytesLen(c byte) (int, error) {
+	if c == msgpcode.Nil {
+		return -1, nil
+	}
+
+	if msgpcode.IsFixedString(c) {
+		return int(c & msgpcode.FixedStrMask), nil
+	}
+
+	switch c {
+	case msgpcode.Str8, msgpcode.Bin8:
+		n, err := d.uint8()
+		return int(n), err
+	case msgpcode.Str16, msgpcode.Bin16:
+		n, err := d.uint16()
+		return int(n), err
+	case msgpcode.Str32, msgpcode.Bin32:
+		n, err := d.uint32()
+		return int(n), err
+	}
+
+	return 0, fmt.Errorf("msgpack: invalid code=%x decoding string/bytes length", c)
+}
+
+func (d *Decoder) DecodeString() (string, error) {
+	if intern := d.flags&useInternedStringsFlag != 0; intern || len(d.dict) > 0 {
+		return d.decodeInternedString(intern)
+	}
+
+	c, err := d.readCode()
+	if err != nil {
+		return "", err
+	}
+	return d.string(c)
+}
+
+func (d *Decoder) string(c byte) (string, error) {
+	n, err := d.bytesLen(c)
+	if err != nil {
+		return "", err
+	}
+	return d.stringWithLen(n)
+}
+
+func (d *Decoder) stringWithLen(n int) (string, error) {
+	if n <= 0 {
+		return "", nil
+	}
+	b, err := d.readN(n)
+	return string(b), err
+}
+
+func decodeStringValue(d *Decoder, v reflect.Value) error {
+	s, err := d.DecodeString()
+	if err != nil {
+		return err
+	}
+	v.SetString(s)
+	return nil
+}
+
+func (d *Decoder) DecodeBytesLen() (int, error) {
+	c, err := d.readCode()
+	if err != nil {
+		return 0, err
+	}
+	return d.bytesLen(c)
+}
+
+func (d *Decoder) DecodeBytes() ([]byte, error) {
+	c, err := d.readCode()
+	if err != nil {
+		return nil, err
+	}
+	return d.bytes(c, nil)
+}
+
+func (d *Decoder) bytes(c byte, b []byte) ([]byte, error) {
+	n, err := d.bytesLen(c)
+	if err != nil {
+		return nil, err
+	}
+	if n == -1 {
+		return nil, nil
+	}
+	return readN(d.r, b, n)
+}
+
+func (d *Decoder) decodeStringTemp() (string, error) {
+	if intern := d.flags&useInternedStringsFlag != 0; intern || len(d.dict) > 0 {
+		return d.decodeInternedString(intern)
+	}
+
+	c, err := d.readCode()
+	if err != nil {
+		return "", err
+	}
+
+	n, err := d.bytesLen(c)
+	if err != nil {
+		return "", err
+	}
+	if n == -1 {
+		return "", nil
+	}
+
+	b, err := d.readN(n)
+	if err != nil {
+		return "", err
+	}
+
+	return bytesToString(b), nil
+}
+
+func (d *Decoder) decodeBytesPtr(ptr *[]byte) error {
+	c, err := d.readCode()
+	if err != nil {
+		return err
+	}
+	return d.bytesPtr(c, ptr)
+}
+
+func (d *Decoder) bytesPtr(c byte, ptr *[]byte) error {
+	n, err := d.bytesLen(c)
+	if err != nil {
+		return err
+	}
+	if n == -1 {
+		*ptr = nil
+		return nil
+	}
+
+	*ptr, err = readN(d.r, *ptr, n)
+	return err
+}
+
+func (d *Decoder) skipBytes(c byte) error {
+	n, err := d.bytesLen(c)
+	if err != nil {
+		return err
+	}
+	if n <= 0 {
+		return nil
+	}
+	return d.skipN(n)
+}
+
+func decodeBytesValue(d *Decoder, v reflect.Value) error {
+	c, err := d.readCode()
+	if err != nil {
+		return err
+	}
+
+	b, err := d.bytes(c, v.Bytes())
+	if err != nil {
+		return err
+	}
+
+	v.SetBytes(b)
+
+	return nil
+}
+
+func decodeByteArrayValue(d *Decoder, v reflect.Value) error {
+	c, err := d.readCode()
+	if err != nil {
+		return err
+	}
+
+	n, err := d.bytesLen(c)
+	if err != nil {
+		return err
+	}
+	if n == -1 {
+		return nil
+	}
+	if n > v.Len() {
+		return fmt.Errorf("%s len is %d, but msgpack has %d elements", v.Type(), v.Len(), n)
+	}
+
+	b := v.Slice(0, n).Bytes()
+	return d.readFull(b)
+}