Moved back to crypto3 main branch. (#276)

Author: Iluvmagick

.github/workflows/run_tests.yml

@@ -79,7 +79,6 @@ jobs:
         uses: actions/checkout@v3
         with:
           repository: ${{ env.SUITE_REPO }}
-          ref: 81-lookup-tables-packer
           submodules: recursive
           fetch-depth: 0