Bump engine.io from 4.1.1 to 4.1.2 (#1418) #135

Job	Run time
Compile source code (10.x, src/tsconfig.json)	47s
Compile source code (10.x, src/tsconfig-es6.json)	46s
Compile source code (12.x, src/tsconfig.json)	44s
Compile source code (12.x, src/tsconfig-es6.json)	47s
Compile source code (14.x, src/tsconfig.json)	45s
Compile source code (14.x, src/tsconfig-es6.json)	43s
Compile source code (15.x, src/tsconfig.json)	48s
Compile source code (15.x, src/tsconfig-es6.json)	48s
Compile source code (16.x, src/tsconfig.json)	45s
Compile source code (16.x, src/tsconfig-es6.json)	47s
Unit Tests (10.x, src/tsconfig.json)	58s
Unit Tests (10.x, src/tsconfig-es6.json)	51s
Unit Tests (12.x, src/tsconfig.json)	53s
Unit Tests (12.x, src/tsconfig-es6.json)	57s
Unit Tests (14.x, src/tsconfig.json)	58s
Unit Tests (14.x, src/tsconfig-es6.json)	50s
Unit Tests (15.x, src/tsconfig.json)	1m 14s
Unit Tests (15.x, src/tsconfig-es6.json)	50s
browser	4m 2s
Upload coverage report to codecov	7s
	19m 20s

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