Update default GeckoDriver version to v0.27.0

Author: mdmintz

seleniumbase/console_scripts/sb_install.py

@@ -40,7 +40,7 @@
 DRIVER_DIR = os.path.dirname(os.path.realpath(drivers.__file__))
 LOCAL_PATH = "/usr/local/bin/"  # On Mac and Linux systems
 DEFAULT_CHROMEDRIVER_VERSION = "2.44"
-DEFAULT_GECKODRIVER_VERSION = "v0.26.0"
+DEFAULT_GECKODRIVER_VERSION = "v0.27.0"
 DEFAULT_EDGEDRIVER_VERSION = "84.0.522.59"
 DEFAULT_OPERADRIVER_VERSION = "v.84.0.4147.89"