{
  "released": "6.2.1",
  "stable": "6.2.1",
  "head": "6.2.1"
}

{
  "released": "6.2.2",
  "stable": "6.2.2",
  "head": "6.2.2"
}

Update cpp version number to 6.2.2
Update cpp version number to 6.2.2

PiperOrigin-RevId: 259031909
