software/jstestnode: use default firefox version

This actually updates firefox from version 68 to version 115

software/jstestnode/runTestSuite.in

@@ -93,7 +93,7 @@ def main():
         firefox_capabilities['marionette'] = True
         browser = webdriver.Firefox(
             capabilities=firefox_capabilities,
-            firefox_binary='${firefox-wrapper-68:location}',
+            firefox_binary='${firefox-wrapper:location}',
             executable_path='${geckodriver:location}')
       else:
         assert target == 'selenium-server', f"Unsupported target {test_runner['target']}"

software/jstestnode/software.cfg

@@ -22,7 +22,7 @@ parts =
   git
   eggs
   xserver
-  firefox-68
+  firefox
   xwd
   renderjs-install
   jio-install