[release] 0.63.0 - Options to disable of ua parser and country lookup libraries (#460)

### New Features
- new option fields disable_ua_parser/disable_country_lookup to disable
the loading of the libraries. This can save memory usage if none of the
configs require user agent/ ip parsing





>Included In This Release
>- 5a0340e devin-ai-integration[bot]
> - Add disable_ua_parser and disable_country_lookup options to reduce
memory usage (#454)

Author: kat-statsig

statsig/version.py

@@ -1 +1 @@
-__version__ = '0.62.0'
+__version__ = '0.63.0'