TestExecutionInfoVUSharing is flaky on Windows

[yorugac]

Noticed on test-prev job (1.16.x, windows-latest):
https://github.com/grafana/k6/runs/3835648741

--- FAIL: TestExecutionInfoVUSharing (3.99s)
    k6execution_test.go:146: 
        	Error Trace:	k6execution_test.go:146
        	Error:      	Not equal: 
        	            	expected: 0x9
        	            	actual  : 0xa
        	Test:       	TestExecutionInfoVUSharing
    k6execution_test.go:147: 
        	Error Trace:	k6execution_test.go:147
        	Error:      	Not equal: 
        	            	expected: 0x4
        	            	actual  : 0x5
        	Test:       	TestExecutionInfoVUSharing
FAIL
FAIL	go.k6.io/k6/core/local	62.225s

Linking #1986

[na--]

https://github.com/grafana/k6/runs/4535414738?check_suite_focus=true was another fail for this test:

--- FAIL: TestExecutionInfoVUSharing (3.89s)
    k6execution_test.go:146: 
        	Error Trace:	k6execution_test.go:146
        	Error:      	Not equal: 
        	            	expected: 0x9
        	            	actual  : 0xa
        	Test:       	TestExecutionInfoVUSharing
    k6execution_test.go:147: 
        	Error Trace:	k6execution_test.go:147
        	Error:      	Not equal: 
        	            	expected: 0x4
        	            	actual  : 0x5
        	Test:       	TestExecutionInfoVUSharing
FAIL
FAIL	go.k6.io/k6/core/local	61.952s