Fix deprecations on 8.19 and 8.20, update CI #26

Annotations

11 warnings

The following actions uses Node.js version which is deprecated and will be forced to run on node20: actions/checkout@v3. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

Notation "[ rel _ _ | _ ]" was already used in scope fun_scope.

Notation "[ rel _ _ : _ | _ ]" was already used in scope fun_scope.

Notation "[ rel _ _ in _ & _ | _ ]" was already used in scope

Notation "[ rel _ _ in _ & _ ]" was already used in scope fun_scope.

Notation "[ rel _ _ in _ | _ ]" was already used in scope fun_scope.

Notation "[ rel _ _ in _ ]" was already used in scope fun_scope.

Notation "_ + _" was already used in scope nat_scope.

Notation "_ - _" was already used in scope nat_scope.

Notation "_ <= _" was already used in scope nat_scope.

Notation "_ < _" was already used in scope nat_scope.