Restore Gradle Cache v3.1.0

[system]

What’s Changed

• Cache-key checksum now matches **/libs.versions.toml instead of **/gradle/libs.versions.toml, picking up version catalog files that don’t live under the gradle/ directory. Paired with save-gradle-cache 1.5.0.

Release 3.1.0 · bitrise-steplib/bitrise-step-restore-gradle-cache