chore(repo): Clean up workers #1379

Job	Run time
test / Test (3.0.1)	3m 19s
test / Test (stable)	2m 44s
test / Test (beta)	2m 47s
native_test / Native Test (macos-latest)	4m 15s
native_test / Native Test (windows-latest)	4m 37s
ddc_test / Test (3.0.1, chrome)	3m 32s
ddc_test / Test (3.0.1, firefox)	3m 37s
ddc_test / Test (stable, chrome)	3m 19s
ddc_test / Test (stable, firefox)	3m 33s
ddc_test / Test (beta, chrome)	3m 20s
ddc_test / Test (beta, firefox)	3m 47s
dart2js_test / Test (3.0.1, chrome)	4m 26s
dart2js_test / Test (3.0.1, firefox)	4m 9s
dart2js_test / Test (stable, chrome)	3m 51s
dart2js_test / Test (stable, firefox)	4m 26s
dart2js_test / Test (beta, chrome)	3m 47s
dart2js_test / Test (beta, firefox)	4m 6s
	1h 3m 35s

Provide feedback