fix(app): revert to digicert signing#18792

sfoster1 merged 5 commits intochore_release-8.5.0Opentrons/opentrons:chore_release-8.5.0from

rqa-4324-worst-day-of-my-life-app-build-both-as-releaseOpentrons/opentrons:rqa-4324-worst-day-of-my-life-app-build-both-as-releaseCopy head branch name to clipboard