Replace capirca dependency with aerleon

[sdoiron0330]

Closes #236

What's Changed

Removed capirca from dependencies
Added aerleon as a dependency
Replaced all references of capirca with aerleon

[jdrew82]

@sdoiron0330 I'm pretty sure this would be a breaking change. What's the impetus behind switching to Aerleon?

[sdoiron0330]

capirca has had an open vulnerability for not using yaml.safe_load as they parse those files. honestly, it's unclear to me if they've actually fixed that vulnerability or if they just haven't properly documented that it's been fixed. either way, the code scanners that my customer is using says that capirca is not allowed due to said vulnerability. aerleon was discussed as a potential swap as it is a fork of capirca that looks to have been created because of the difficulty to move things forward in capirca