Pact Foundation

<https://github.com/pact-foundation/pact-php/pull/288|#288 fix: display stderr on pact publish process failure>
Pull request opened by <https://github.com/WaylandAce|WaylandAce>
Display stderr on pact publish process failure

Unify behavior with <https://github.com/pact-foundation/pact-php/blob/master/src/PhpPact/Standalone/ProviderVerifier/VerifierProcess.php#L65|https://github.com/pact-foundation/pact-php/blob/master/src/PhpPact/Standalone/ProviderVerifier/VerifierProcess.php#L65>
<https://github.com/pact-foundation/pact-php|pact-foundation/pact-php>
GitHub Actions: PHP ${{ matrix.php }} on ${{ matrix.operating-system }} with ${{ matrix.dependencies }} dependencies
GitHub Actions: php-cs (8.1)
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