devops: drop environment: allow-uploading-flakiness-results

[yury-s]

The only mention of the 'environment' is https://github.com/marketplace/actions/azure-login#environment, which is different than job environment.

[github-actions]

Test results for "tests 1"

5 flaky

⚠️ [firefox-page] › tests/page/page-evaluate.spec.ts:403:3 › should throw for too deep reference chain @firefox-ubuntu-22.04-node18
⚠️ [webkit-library] › tests/library/screenshot.spec.ts:205:14 › element screenshot › element screenshot should work with a mobile viewport @webkit-ubuntu-22.04-node18
⚠️ [webkit-library] › tests/library/video.spec.ts:379:5 › screencast › should capture navigation @webkit-ubuntu-22.04-node18
⚠️ [webkit-library] › tests/library/video.spec.ts:441:5 › screencast › should work for popups @webkit-ubuntu-22.04-node18
⚠️ [webkit-page] › tests/page/page-screenshot.spec.ts:345:5 › page screenshot › should work while navigating @webkit-ubuntu-22.04-node18

38812 passed, 809 skipped
✔️✔️✔️

Merge workflow run.

[mxschmitt]

We need this in order to allow the OIDC login via uses: azure/login@v2. This value is reflected on the Azure Portal side.