Bump rack from 2.2.8 to 2.2.8.1 #2362

Job	Run time
test-ruby-matrix (4, 0)	2m 16s
test-ruby-matrix (4, 1)	2m 47s
test-ruby-matrix (4, 2)	2m 55s
test-ruby-matrix (4, 3)	2m 28s
CodeQL SAST scan / Analyze	1m 21s
Dependency Review scan / dependency-review-pr	3s
Dependency Review scan / dependency-review-push	0s
Lint JavaScript / Run Standardx	10s
SNYK security analysis / sast	12s
SNYK security analysis / sca	5s
Lint Ruby / Run RuboCop	21s
Lint SCSS / Run Stylelint	9s
Security Analysis / Run Brakeman	22s
Test JavaScript / Run Jasmine	34s
Test Ruby	1s
	13m 44s

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