chore: Create a v2 tag that points to the latest commit for 2.x.x

Create a v2 tag that points to the latest commit for 2.x.x, so that consumers of the action can always have the latest `v2`, e.g.

`uses: open-sauced/pizza-action@v2`

Relates to https://github.com/open-sauced/pizza-cli/pull/220