Github Actions not Flagging failing MATLAB tests

[Jiya-Rathi]

Describe the bug
Github Actions not flagging failing MATLAB test "testPoissonAccuracy.m"

To Reproduce
While PR #376 is still open, the testPoissonAccuracy.m fails for the 8th order test; the build system should catch it, but it's not. The build system finishes and says all 14 tests have passed, but that should not be the case.

Expected behavior
All tests should pass, but if any tests in the future are failing, the build system should flag it.

Screenshots
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Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
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Keep-open request

• I am requesting maintainer review for keep-open.

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