Add webdriver-manager to testing requirements

Author: akksi

.circleci/config.yml

@@ -102,7 +102,6 @@ jobs:
           command: |
             python -m venv venv && . venv/bin/activate
             pip install --upgrade pip wheel
-            pip install webdriver-manager
             pip install -e .[ci,dev,testing] --no-cache-dir --progress-bar off
       - run:
           name: 🌸 Python & JS Lint

requires-testing.txt

@@ -7,3 +7,4 @@ pytest>=6.0.2
 requests[security]>=2.21.0
 selenium>=3.141.0
 waitress>=1.4.4
+webdriver-manager>=3.5.1