10 files declare their use of TriggerInterface in Build Hooks 3.x

BitbucketBuildHooksTest.php in modules/build_hooks_bitbucket/tests/src/Kernel/BitbucketBuildHooksTest.php

BuildHooksConfigEntityTest.php in tests/src/Kernel/BuildHooksConfigEntityTest.php

BuildHooksKernelTestBase.php in tests/src/Kernel/BuildHooksKernelTestBase.php

BuildTriggerTest.php in tests/src/Kernel/BuildTriggerTest.php

CircleBuildHookTest.php in modules/build_hooks_circleci/tests/src/Kernel/CircleBuildHookTest.php

DeploymentForm.php in src/Form/DeploymentForm.php

FrontendEnvironmentForm.php in src/Form/FrontendEnvironmentForm.php

GithubBuildHooksTest.php in modules/build_hooks_github/tests/src/Kernel/GithubBuildHooksTest.php

NetlifyBuildHooksTest.php in modules/build_hooks_netlify/tests/src/Kernel/NetlifyBuildHooksTest.php

UiTest.php in tests/src/Functional/UiTest.php