Move Chrome Driver Version to Env

This will allow us to upgrade chrome driver easily. Set the default chrome driver to 2.32.

Also remove the comment and empty line to avoid getting below warning:

```
[WARNING]: Empty continuation lines will become errors in a future release.
```

docker-compose.yml

@@ -43,6 +43,7 @@ services:
           - INSTALL_DUSK_DEPS=${WORKSPACE_INSTALL_DUSK_DEPS}
           - PUID=${WORKSPACE_PUID}
           - PGID=${WORKSPACE_PGID}
+          - CHROME_DRIVER_VERSION=${WORKSPACE_CHROME_DRIVER_VERSION}
           - NODE_VERSION=${WORKSPACE_NODE_VERSION}
           - YARN_VERSION=${WORKSPACE_YARN_VERSION}
           - TZ=${WORKSPACE_TIMEZONE}