chore: roll Playwright to tot (microsoft#522)

Author: aslushnikov

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v2
       with:
-        python-version: 3.8
+        python-version: 3.9
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip

README.md

@@ -6,9 +6,9 @@ Playwright is a Python library to automate [Chromium](https://www.chromium.org/H
 
 |          | Linux | macOS | Windows |
 |   :---   | :---: | :---: | :---:   |
-| Chromium <!-- GEN:chromium-version -->90.0.4412.0<!-- GEN:stop --> | ✅ | ✅ | ✅ |
+| Chromium <!-- GEN:chromium-version -->90.0.4421.0<!-- GEN:stop --> | ✅ | ✅ | ✅ |
 | WebKit <!-- GEN:webkit-version -->14.1<!-- GEN:stop --> | ✅ | ✅ | ✅ |
-| Firefox <!-- GEN:firefox-version -->86.0b9<!-- GEN:stop --> | ✅ | ✅ | ✅ |
+| Firefox <!-- GEN:firefox-version -->86.0b10<!-- GEN:stop --> | ✅ | ✅ | ✅ |
 
 Headless execution is supported for all browsers on all platforms.