Error getting GitHub context fetch failed HttpError: fetch failed

**Describe the bug**
The GitHub Actions extension is reporting this error message:


In the Output window the following messages are shown:
```
Error getting GitHub context
fetch failed
HttpError: fetch failed
at c:\Users\xxx\.vscode\extensions\github.vscode-github-actions-0.26.2\dist\extension-node.js:2:1366802
at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
at async c:\Users\xxx\.vscode\extensions\github.vscode-github-actions-0.26.2\dist\extension-node.js:2:1447997
at async Object.get (c:\Users\xxx\.vscode\extensions\github.vscode-github-actions-0.26.2\dist\extension-node.js:2:1447724)
at async Lt (c:\Users\xxx\.vscode\extensions\github.vscode-github-actions-0.26.2\dist\extension-node.js:2:1447916)
at async c:\Users\xxx\.vscode\extensions\github.vscode-github-actions-0.26.2\dist\extension-node.js:2:1626346
at async i.h (c:\Users\xxx\AppData\Local\Programs\Microsoft VS Code\resources\app\out\vs\workbench\api\node\extensionHostProcess.js:125:139661)

Cannot fetch github context
Error: Cannot fetch github context
at vt (c:\Users\xxx\.vscode\extensions\github.vscode-github-actions-0.26.2\dist\extension-node.js:2:1444927)
at async c:\Users\xxx\.vscode\extensions\github.vscode-github-actions-0.26.2\dist\extension-node.js:2:1626446
at async i.h (c:\Users\xxx\AppData\Local\Programs\Microsoft VS Code\resources\app\out\vs\workbench\api\node\extensionHostProcess.js:125:139661)

```

**To Reproduce**
Steps to reproduce the behavior:
1. Open VSCode. See GitHub Actions Output
2. Click refresh button on extension. Same error is logged

**Expected behavior**
No error message is shown

**Screenshots**
See above.

**Extension Version**
`0.26.2`

**Additional context**
I have seen issues https://github.com/github/vscode-github-actions/issues/77 and https://github.com/github/vscode-github-actions/issues/251.

I followed the instructions at https://github.com/github/vscode-github-actions/issues/77#issuecomment-1503960028 but the problem is still unresolved.