TEMP: point update-criteria at fork fix branch to verify Canvas sync

[algomaster99]

Summary

• Mirrors the existing TEMP override on check_task_canvas.yml (TEMP: point check-canvas at fork fix branch #2944): points update_criteria.yml's "Get tools" checkout at algomaster99/github-canvas-integration-devops@fix/replace-presentation-with-project (upstream PR KTH/github-canvas-integration-devops#7) instead of main.
• main's update_grading.py::parse_criteria() crashes with IndexError: list index out of range on the ## Project section (it has no criteria table, unlike the other sections), which has caused the Grading criteria workflow to fail on every push to grading-criteria.md since Add grading criteria for KTH DevOps course #2928 — meaning Canvas has never had its 2026 group categories created (confirmed via check_task_canvas.yml on [TOY] Scientific paper proposal: CI check test, week 2 #2945 logging CANVAS_GROUPS_SET {}).
• The fork branch skips sections without a full criteria table (like Project) instead of crashing, per team decision to skip Project for now.
• Second commit is a no-op trailing-newline touch to grading-criteria.md, since update_criteria.yml only triggers on push to 2026 when that file changes — needed to actually retrigger the workflow and verify the fix against real Canvas.

Test plan

• Merge and confirm the Grading criteria workflow run succeeds (no IndexError)
• Confirm Canvas group categories exist for Demos, Scientific Papers, Executable Tutorial, Open-Source Contribution, Feedback (Project intentionally skipped)
• Re-run check_task_canvas.yml on an open scientific-paper PR (e.g. [TOY] Scientific paper proposal: CI check test, week 2 #2945) and confirm CANVAS_GROUPS_SET is no longer empty
• Once KTH/github-canvas-integration-devops#7 merges to main, revert this TEMP commit (and the matching one from TEMP: point check-canvas at fork fix branch #2944) to point both workflows back at main