[Release] Update post release tasks for cookbooks (#280)

* [Release] Update post release tasks for cookbooks

* Remove requirements.txt and explain on README that conda-lock must be available

* Review comment suggestion

Co-authored-by: Sutou Kouhei <kou@cozmixng.org>

* Split process into two scripts. One to update versions and one to regenerate stable branch and tag

* Apply suggestions from code review

Co-authored-by: Sutou Kouhei <kou@cozmixng.org>

Co-authored-by: Sutou Kouhei <kou@cozmixng.org>
8 files changed