fix: update playwright image

[horacioh]

because we were getting this message when playwright runs:

    ╔══════════════════════════════════════════════════════════════════════╗
    ║ Looks like Playwright Test or Playwright was just updated to 1.35.1. ║
    ║ Please update docker image as well.                                  ║
    ║ -  current: mcr.microsoft.com/playwright:v1.33.0-focal               ║
    ║ - required: mcr.microsoft.com/playwright:v1.35.1-focal               ║
    ║                                                                      ║
    ║ <3 Playwright Team                                                   ║
    ╚══════════════════════════════════════════════════════════════════════╝

Updates from mcr.microsoft.com/playwright:v1.33.0-focal to mcr.microsoft.com/playwright:v1.35.1-focal

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