* globally upgrade syn to 1.0.109
* globally upgrade quote to 1.0.26
* globally upgrade proc-macro2 to 1.0.56
* globally bump syn to v2.0.13
* update expander to v1.0.0
* temporary commit to prove new version of expander works
(new version hasn't been released yet so using git)
* use expander 2.0.0
* upgrade to syn 2.0.14
* update lock file