fix(schematics): use cli version for schematics/angular package

[djhojd]

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• I read and followed the CONTRIBUTING.md guide.
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Short description of what this resolves:

Using angular/core package version for schematics/angular it will sometimes raise "No matching version found" error because they are in sync only with the major versions. The schematics scoped packages are under the Angular CLI repo and they will be released together. By using the CLI version when add the schematics/angular package to the devDependencies we will, hopefully, be sure that the version exists and is published to npm.

Closes #1864

[yggg]

Thanks a lot @djhojd 👍