Tag and release readme is outdated

[Siegrift]

It should be in sync with https://github.com/api3dao/commons/blob/main/.github/workflows/main.yml

[Siegrift]

Also it seems new repositories require contents write permission as well. See: api3dao/data-feed-proxy-combinators#50

[Siegrift]

Also, the token isn't needed to clone the repo. See: api3dao/signed-api#513