fix(ci): add ANTHROPIC_BASE_URL and OPENAI_API_KEY env vars

Upstream workflow was missing these env vars needed for custom
LLM provider configurations.

Author: denis.zheng

.github/workflows/daily-digest.yml

@@ -38,7 +38,9 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           LLM_PROVIDER: ${{ secrets.LLM_PROVIDER }}
+          ANTHROPIC_BASE_URL: ${{ secrets.ANTHROPIC_BASE_URL }}
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
+          OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
           PRODUCTHUNT_TOKEN: ${{ secrets.PRODUCTHUNT_TOKEN }}
           DIGEST_REPO: ${{ github.repository }}
         run: pnpm start