fix: handle caret and tilde in runtime versions

[janoshrubos]

PR Checklist

• The PR title follows our guidelines: https://github.com/NativeScript/NativeScript/blob/master/CONTRIBUTING.md#commit-messages.
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What is the current behavior?

ns prepare android command fails if the @nativescript/android runtime package version has a leading caret or tilde: ^6.5.3

What is the new behavior?

CLI handles leading caret and tilde in android runtime package.

Fixes #5500