attack navigator now on v4.3 where generated layers on v4.2

[jonz-secops]

from: https://mitre-attack.github.io/attack-navigator/

uploading layer generated from fresh build of the mapping tool (current as of issue open date)

WARNING: Uploaded layer version (4.2) does not match Navigator's layer version (4.3). The layer configuration may not be fully restored.

[mehaase]

Thank you for reporting this. We are planning some updates later this year and will try to address this issue.