docs: link to Ubuntu 22.04 deps in `GettingStarted.md`
docs: link to Ubuntu 22.04 deps in `GettingStarted.md`

Currently, only a link to Ubuntu 20.04 dependencies is present. Those dependencies won't work for Ubuntu 22.04.
apple/swift,roambotics/swift,apple/swift,roambotics/swift,apple/swift,apple/swift,roambotics/swift,apple/swift,roambotics/swift,roambotics/swift,roambotics/swift,apple/swift