[ci] Execute tests even if QA checks fail, build anyway

[nemesifier]

Let's not stop testing if QA checks fail.
Let's build in any case to make sure build errors are spotted also if tests fail.
If a PR from a new contributor doesn't look good we can avoid running the build entirely.

[coveralls]

Pull Request Test Coverage Report for Build 9799783843

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 99.689%

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Totals
Change from base Build 9274835172:	0.0%
Covered Lines:	3207
Relevant Lines:	3217

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💛 - Coveralls