manager(gradle): no deps detected when 3 dep strings present in the configuration

[RahulGautamSingh]

Describe the proposed change(s).

Ref: https://github.com/renovatebot/renovate/discussions/30232

Gradle manager does not detect any dep when 3 dependency strings are present in testImplementation (or, possibly any other configuration).

Reproduction: https://github.com/bh-tt/renovate-tt-gradle-reproducer