Do not use env variable for node version

.github/workflows/release.yml

@@ -6,17 +6,14 @@ on:
       - closed
   workflow_dispatch:
 
-env:
-  NODE_VERSION: 18
-
 ### TODO: Replace instances of './.github/actions/' w/ `auth0/dx-sdk-actions/` and append `@latest` after the common `dx-sdk-actions` repo is made public.
 ### TODO: Also remove `get-prerelease`, `get-version`, `release-create`, `tag-create` and `tag-exists` actions from this repo's .github/actions folder once the repo is public.
 
 jobs:
   release:
     uses: ./.github/workflows/npm-release.yml
     with:
-      node-version: ${{ env.NODE_VERSION }}
+      node-version: 18
     secrets:
       npm-token: ${{ secrets.NPM_TOKEN }}
       github-token: ${{ secrets.GITHUB_TOKEN }}