There is a version conflict in the plugin that restrict plugin to activate.
Error loading plugin 'fastlane-plugin-firebase_test_lab': Unable to activate fastlane-plugin-firebase_test_lab-1.0.5, because google-cloud-storage-1.16.0 conflicts with google-cloud-storage (~> 1.15.0)
[06:54:43]: It seems like you wanted to load some plugins, however they couldn't be loaded
There is a version conflict in the plugin that restrict plugin to activate.