Add Rake task to remove inappropriately-granted perms #3514

Job	Run time
test-ruby-matrix (4, 0)	2m 11s
test-ruby-matrix (4, 1)	3m 37s
test-ruby-matrix (4, 2)	2m 9s
test-ruby-matrix (4, 3)	2m 8s
CodeQL SAST scan / Analyze	1m 21s
Dependency Review scan / dependency-review-pr	4s
Dependency Review scan / dependency-review-push	0s
Lint JavaScript / Run Standardx	13s
Lint Ruby / Run RuboCop	18s
Lint SCSS / Run Stylelint	13s
Security Analysis / Run Brakeman	22s
Test JavaScript / Run Jasmine	33s
Test Ruby	1s
	13m 10s

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