Fix version tagging in app-pack-generator and unity-app-generator

[mcduffie]

the release version and the version inside things like app-pack-gen and unity-app-package are conflicting.

for example, tagged as 0.4.0, but version is (still at) 0.2.2 https://github.com/unity-sds/app-pack-generator/blob/main/app_pack_generator/version.py#L1

version.py
__version__ = "0.2.2"

[mcduffie]

Fixed by Mike in 0.4.1