Update scenario.yaml results for nightly tests

[gidden]

This PR updates nightly test expected values.

It contains a subset of the changes in #669, and closes #671.

How to review

• Try local execution

PR checklist

• Continuous integration checks all ✅

- [ ] Add or expand tests; coverage checks both ✅
- [ ] Add, expand, or update documentation.
- [ ] Update release notes.

[codecov]

Codecov Report

Merging #688 (ec1c0e8) into main (8e701a4) will not change coverage.
The diff coverage is n/a.

❗ Current head ec1c0e8 differs from pull request most recent head 04afc14. Consider uploading reports for the commit 04afc14 to get more accurate results

@@          Coverage Diff          @@
##            main    #688   +/-   ##
=====================================
  Coverage   93.5%   93.5%           
=====================================
  Files         44      44           
  Lines       3514    3514           
=====================================
  Hits        3286    3286           
  Misses       228     228           

[khaeru]

I pushed a commit temporarily enabling these lines:

message_ix/.github/workflows/nightly.yaml

Lines 6 to 8 in 8e701a4

	# Uncomment these two lines for debugging, but leave them commented on 'main'
	# pull_request:
	# branches: [ main ]

Here is the resulting check run.

Once this passes, confirming the new values, I will:

• Approve.
• Force-push the branch to drop the temporary commit. (This can also be done by pushing a second commit that comments the 2 lines again, if the branch is to be squash-merged.)
• Merge.

[khaeru]

Once this passes,

Sorry, didn't notice earlier: this can never pass. The "nightly" workflow uses a HTTPS username/password stored as GitHub "secrets" to download the input data for the nightly tests. This current PR is from a fork, and GHA runs from forks aren't given access to such secrets (for security reasons).

The PR should be made from a branch in the main repo → #689