New version of gpb: 4.21.2#173

lrascao merged 1 commit intolrascao:developlrascao/rebar3_gpb_plugin:developfrom

tomas-abrahamsson:pr-for-version-4.21.2tomas-abrahamsson/rebar3_gpb_plugin:pr-for-version-4.21.2Copy head branch name to clipboard