Update changelog info for release - v1.3.0
## In development
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+## v1.3.0 - December 13, 2020
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- Fix connectivity issues in Ansible lesson [#349](https://github.com/nre-learning/nrelabs-curriculum/pull/349)
- Fixing Salt and St2 images/lessons [#350](https://github.com/nre-learning/nrelabs-curriculum/pull/350)
- Revert tshoot lesson back to vQFX [#347](https://github.com/nre-learning/nrelabs-curriculum/pull/347)
