Update default Firefox preferences

Author: mdmintz

seleniumbase/core/browser_launcher.py

@@ -512,7 +512,7 @@ def _set_firefox_options(
     options.set_preference("pdfjs.disabled", True)
     options.set_preference("app.update.auto", False)
     options.set_preference("app.update.enabled", False)
-    options.set_preference("app.update.silent", False)
+    options.set_preference("app.update.silent", True)
     options.set_preference("browser.formfill.enable", False)
     options.set_preference("browser.privatebrowsing.autostart", False)
     options.set_preference("devtools.errorconsole.enabled", True)
@@ -524,7 +524,7 @@ def _set_firefox_options(
     options.set_preference("extensions.systemAddon.update.enabled", False)
     options.set_preference("extensions.update.autoUpdateDefault", False)
     options.set_preference("extensions.update.enabled", False)
-    options.set_preference("extensions.update.silent", False)
+    options.set_preference("extensions.update.silent", True)
     options.set_preference("datareporting.healthreport.service.enabled", False)
     options.set_preference("datareporting.healthreport.uploadEnabled", False)
     options.set_preference("datareporting.policy.dataSubmissionEnabled", False)