(packaging) Bump version to 1.3.3
(packaging) Bump version to 1.3.3

This commit updates pxp-agent's version to 1.3.3 following the release
of 1.3.2 as part of puppet-agent 1.8.3

puppetlabs/pxp-agent,puppetlabs/pxp-agent,puppetlabs/pxp-agent