CI: Size report workflow fails in PR

[yvt]

https://github.com/r3-os/r3/actions/runs/4430420543/jobs/7822620604

Run LouisBrunner/checks-action@v1.5.0
  with:
    token: ***
    name: Size report: qemu_mps2_an505 --arch cortex_m4f
    output: {"summary": "Test suite size report"}
  
    output_text_description_file: size-report.md
    conclusion: success
    status: completed
Error: Resource not accessible by integration