Analytics: Fix SDK Version Bug

[sshropshire]

Summary of changes

• This PR fixes a bug in our Gradle file that tries to inject an environment variable that doesn't exist
• We should use rootProject.version going forward instead of versionName

Checklist

• Added a changelog entry

Authors

List GitHub usernames for everyone who contributed to this pull request.

• @sshropshire

[KunJeongPark]

Did you check Notebooks to see analytics output?

[sshropshire]

Did you check Notebooks to see analytics output?

@KunJeongPark I can, I haven't verified end-to-end yet.

[sshropshire]

@KunJeongPark I was able to verify and also ended up adding another revision to send all analytics to the LIVE environment so they can be tracked. Great catch!