Fix get-pr-info gha reference (#500)

`rapidsai/shared-action-workflows/get-pr-info` was deleted in favor of `nv-gha-runners/get-pr-info`

rapidsai/shared-actions#11

Authors:
  - Christopher Harris (https://github.com/cwharris)
  - David Gardner (https://github.com/dagardner-nv)

Approvers:
  - Michael Demoret (https://github.com/mdemoret-nv)

URL: #500

.github/workflows/pr.yaml

@@ -58,7 +58,7 @@ jobs:
     steps:
       - name: Get PR Info
         id: get-pr-info
-        uses: rapidsai/shared-action-workflows/get-pr-info@branch-23.08
+        uses: nv-gha-runners/get-pr-info@main
         if: ${{ startsWith(github.ref_name, 'pull-request/') }}
     outputs:
       is_pr: ${{ startsWith(github.ref_name, 'pull-request/') }}