fix: pass Cypress preview URL within e2e job

Use an E2E-job step output for the Cloudflare Pages branch alias and feed that into the Cypress action config. This avoids the deploy job output being dropped as secret-like while still passing Cypress a concrete baseUrl.

Author: jderochervlk

.github/workflows/deploy.yml

@@ -99,21 +99,25 @@ jobs:
       - name: Build ReScript
         run: yarn build:res
       - name: Set Cypress base URL
+        id: cypress-base-url
         shell: bash
         run: |
           RAW_BRANCH="${{ github.head_ref || github.ref_name }}"
 
           if [[ "$RAW_BRANCH" == "master" ]]; then
-             echo "CYPRESS_BASE_URL=https://rescript-lang.org" >> "$GITHUB_ENV"
+             CYPRESS_BASE_URL="https://rescript-lang.org"
           else
              SAFE_BRANCH="${RAW_BRANCH//\//-}"
 
              SAFE_BRANCH=$(echo "$SAFE_BRANCH" | tr '[:upper:]' '[:lower:]')
 
-             echo "CYPRESS_BASE_URL=https://${SAFE_BRANCH}.rescript-lang.pages.dev" >> "$GITHUB_ENV"
+             CYPRESS_BASE_URL="https://${SAFE_BRANCH}.rescript-lang.pages.dev"
           fi
+
+          echo "url=$CYPRESS_BASE_URL" >> "$GITHUB_OUTPUT"
       - name: Cypress E2E tests
         uses: cypress-io/github-action@v7
         with:
           install: false
-          command: yarn cypress run --browser chrome --config baseUrl="$CYPRESS_BASE_URL"
+          browser: chrome
+          config: baseUrl=${{ steps.cypress-base-url.outputs.url }}