Update Results Controller to update last_updated_by

[lizzie-liu]

Proposed Changes

This PR updates the ResultsController#update_mark method to update the last_updated_by attribute when marks are modified.

Changes

• Set last_updated_by to the current user during mark updates in ResultsController#update_mark
• Updated tests in results_controller_spec.rb

Screenshots of your changes (if applicable)

Associated documentation repository pull request (if applicable)

Type of Change

(Write an X or a brief description next to the type or types that best describe your changes.)

Type	Applies?
🚨 Breaking change (fix or feature that would cause existing functionality to change)
✨ New feature (non-breaking change that adds functionality)
🐛 Bug fix (non-breaking change that fixes an issue)
🎨 User interface change (change to user interface; provide screenshots)
♻️ Refactoring (internal change to codebase, without changing functionality)
🚦 Test update (change that only adds or modifies tests)
📦 Dependency update (change that updates a dependency)
🔧 Internal (change that only affects developers or continuous integration)	X

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Before opening your pull request:

• I have performed a self-review of my changes.
  • Check that all changed files included in this pull request are intentional changes.
  • Check that all changes are relevant to the purpose of this pull request, as described above.
• I have added tests for my changes, if applicable.
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[coveralls]

Pull Request Test Coverage Report for Build 23764168704

Details

• 1 of 4 (25.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.006%) to 91.707%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
spec/controllers/results_controller_spec.rb	0	3	0.0%

Totals
Change from base Build 23747917452:	-0.006%
Covered Lines:	45168
Relevant Lines:	48444

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💛 - Coveralls

[david-yz-liu]

Thanks @lizzie-liu!