fix: auto find more cobertura reports

[mrexox]

:zap: Summary

Auto find cobertura coverage reports like myproject-coverage.xml

:ballot_box_with_check: Checklist

• [x] Add specs

[coveralls-official[bot]]

Pull Request Test Coverage Report for Build 5310284942

• 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 90.352%

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Totals
Change from base Build 5199904701:	0.0%
Covered Lines:	796
Relevant Lines:	881

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💛 - Coveralls