Allow CI to pass when uploading to artifacts fails (pytorch#1768)

Summary:
## Motivation

This has been failing flakily, which is annoying. This is not an ideal fix but will stop the CI from failing when uploading performance data to the artifacts branch fails.

### Have you read the [Contributing Guidelines on pull requests](https://github.com/pytorch/botorch/blob/main/CONTRIBUTING.md#pull-requests)?

Yes

Pull Request resolved: pytorch#1768

Test Plan: See if it breaks again after this is landed

Reviewed By: Balandat

Differential Revision: D44477955

Pulled By: esantorella

fbshipit-source-id: 91b009133875ac98071e7dc1728d9092265bee38

.github/workflows/reusable_tutorials.yml

@@ -90,6 +90,8 @@ jobs:
         python scripts/run_tutorials.py -p "$(pwd)"
     - if: ${{ inputs.upload_artifact }}
       name: Upload performance data to artifacts branch
+      # Sometimes pushing to this branch doesn't work -- fix planned
+      continue-on-error: true
       # 1) Switch to artifacts branch
       # 2) Add the new CSV file
       # 3) Get .py and .ipynb files needed for analyzing tutorials data from main