GitHub action stalls on setup-r-dependencies@v2

Question

This is cross posted on the RStudio Community site. I am using r-lib/setup-r-dependencies@v2 for a bookdown project on GitHub action. However, the job is stalling when pak tries to create a lock file. Here is an example run , and here is the workflow.

As you can see, eventually the job just times out.

The issue seems similar to this post. The solution there was to use the most current RSPM, but I believe that is already what I am using (I don't specify anything different in the workflow).

Any ideas on what might be causing this?

Edit: Here is the full yaml code for the workflow (linked above)

on:
  push:
    branches: [main, master]
  workflow_dispatch:

name: bookdown

jobs:
  bookdown:
    runs-on: ubuntu-latest
    # Only restrict concurrency for non-PR jobs
    concurrency:
      group: pkgdown-${{ github.event_name != 'pull_request' || github.run_id }}
    env:
      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
    steps:
      - uses: actions/checkout@v2

      - uses: r-lib/actions/setup-pandoc@v2

      - uses: r-lib/actions/setup-r@v2
        with:
          use-public-rspm: true

      - uses: r-lib/actions/setup-r-dependencies@v2
        with:
          cache-version: 1

      - name: Cache bookdown results
        uses: actions/cache@v2
        with:
          path: _bookdown_files
          key: bookdown-${{ hashFiles('**/*Rmd') }}
          restore-keys: bookdown-

      - name: Build site
        run: bookdown::render_book("index.Rmd", quiet = TRUE)
        shell: Rscript {0}

      - name: Deploy to GitHub pages 
        if: github.event_name != 'pull_request'
        uses: JamesIves/[email protected]
        with:
          branch: gh-pages
          folder: _book