Fix release workflow

Author: pgaskin

.github/workflows/release.yaml

@@ -49,6 +49,7 @@ jobs:
       with:
         retries: 3 # note: this applies to individual github.rest calls, not the entire script
         script: |
+          const {readFile} = require('fs').promises
           await github.rest.repos.uploadReleaseAsset({
             owner: context.repo.owner,
             repo: context.repo.repo,