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/golang.org/x/sys/unix/zsyscall_linux.go

@@ -1,4 +1,4 @@
-// Code generated by mkmerge.go; DO NOT EDIT.
+// Code generated by mkmerge; DO NOT EDIT.
 
 //go:build linux
 // +build linux
@@ -409,6 +409,21 @@ func mount(source string, target string, fstype string, flags uintptr, data *byt
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func mountSetattr(dirfd int, pathname string, flags uint, attr *MountAttr, size uintptr) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(pathname)
+	if err != nil {
+		return
+	}
+	_, _, e1 := Syscall6(SYS_MOUNT_SETATTR, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags), uintptr(unsafe.Pointer(attr)), uintptr(size), 0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Acct(path string) (err error) {
 	var _p0 *byte
 	_p0, err = BytePtrFromString(path)