Bump actions/cache from 5 to 6 - #72

Process completed with exit code 1.

Ignored error pattern #^If condition is always true\.$# (if.alwaysTrue) in path /home/runner/work/openapi-verifier/openapi-verifier/tests/Adapters/SlimAdapterTest.php was not matched in reported errors.

Ignored error pattern #^Negated boolean expression is always false\.$# (booleanNot.alwaysFalse) in path /home/runner/work/openapi-verifier/openapi-verifier/tests/Adapters/LaravelAdapterTest.php is expected to occur 2 times, but occurred only 1 time.

Ignored error pattern #^Ternary operator condition is always false\.$# (ternary.alwaysFalse) in path /home/runner/work/openapi-verifier/openapi-verifier/tests/Adapters/LaravelAdapterTest.php was not matched in reported errors.