I have started to see my GitHub CI jobs fail that used to work:
Initialise the opam repositories
/opt/hostedtoolcache/opam/2.1.6/x86_64/opam repository add default https://github.com/ocaml/opam-repository.git --all-switches --set-default
[default] Initialised
[ERROR] At /home/runner/.opam/repo/default/repo:13:45-13:46::
Parse error [skipped]
[NOTE] Repository at git+https://github.com/ocaml/opam-repository.git doesn't define its version, assuming it's 1.2.
The error points to the OCaml Opam repository. Is this part of the Opam change?