Github action fails on Setup-r@v2 step with self-hosted runner

[sulakshana13]

Describe the bug
Hi,

I'm trying to set up GitHub actions on a branch for unit testing using a self-hosted runner. I have set up a simple workflow as follows:

name: unit-tests

on:
  push:
    branches: [ "unit-test" ]
  pull_request:
    branches: [ "unit-test" ]
    
jobs:
  job1:
      name: unit-test-1
      runs-on: self-hosted
      steps:
            - uses: actions/checkout@v4
            - uses: r-lib/actions/setup-r@v2
            - run: Rscript -e "source('test/test.R')"

On the setup-r step, I get an error stating 'failed to get R release' as it tries to load a non-existent R setup file. Here are the logs:

[2023-10-24 15:26:06Z INFO HostContext] Well known directory 'Work': 'C:\Windows\System32\github-actions-runner\_work'
[2023-10-24 15:26:07Z INFO ProcessInvokerWrapper] STDOUT/STDERR stream read finished.
[2023-10-24 15:26:07Z INFO ProcessInvokerWrapper] STDOUT/STDERR stream read finished.
[2023-10-24 15:26:07Z INFO ProcessInvokerWrapper] Finished process 21072 with exit code 1, and elapsed time 00:13:43.7166958.
[2023-10-24 15:26:07Z INFO CreateStepSummaryCommand] Step Summary file (C:\Windows\System32\github-actions-runner\_work\_temp\_runner_file_commands\step_summary_178bf827-e624-4483-b42f-b43469b986ab) is empty; skipping attachment upload
[2023-10-24 15:26:07Z INFO StepsRunner] Step result: Failed
[2023-10-24 15:26:07Z INFO ExecutionContext] Publish step telemetry for current step {
  "action": "r-lib/actions/setup-r",
  "ref": "v2",
  "type": "node16",
  "stage": "Main",
  "stepId": "3b278755-195a-5c4d-4abe-e54ed06abade",
  "stepContextName": "__r-lib_actions",
  "hasPreStep": false,
  "hasPostStep": false,
  "result": "failed",
  "errorMessages": [
    "Failed to get R release: Failed to get R 4.3.1: Failed to install R: Error: The process 'C:\\Windows\\System32\\github-actions-runner\\_work\\_temp\\R-4.3.1-win.exe' failed with exit code 1"
  ],
  "executionTimeInSeconds": 824,
  "startTime": "2023-10-24T15:12:23.4965824Z",
  "finishTime": "2023-10-24T15:26:07.2438276Z"
}.
[2023-10-24 15:26:07Z INFO StepsRunner] Update job result with current step result 'Failed'.
[2023-10-24 15:26:07Z INFO StepsRunner] Current state: job state = 'Failed'
[2023-10-24 15:26:07Z INFO StepsRunner] Processing step: DisplayName='Run Rscript -e "source('test/test.R')"'
[2023-10-24 15:26:07Z INFO StepsRunner] Evaluating: success()
[2023-10-24 15:26:07Z INFO StepsRunner] Result: false
[2023-10-24 15:26:07Z INFO StepsRunner] Skipping step due to condition evaluation.
[2023-10-24 15:26:07Z INFO StepsRunner] No need for updating job result with current step result 'Skipped'.
[2023-10-24 15:26:07Z INFO StepsRunner] Current state: job state = 'Failed'

Any idea why the R-4.3.1-win.exe is missing from the _temp folder?

Thank you