[fix] ./manage: upgrade geckodriver when GECKODRIVER_VERSION change

manage

@@ -485,10 +485,9 @@ gecko.driver() {
     (   set -e
         pyenv.activate
 
-        # TODO : check the current geckodriver version
+        INSTALLED_VERSION=$(geckodriver -V 2> /dev/null | head -1 | awk '{ print "v" $2}') || INSTALLED_VERSION=""
-        geckodriver -V > /dev/null 2>&1 || NOTFOUND=1
         set +e
-        if [ -z "$NOTFOUND" ]; then
+        if [ "${INSTALLED_VERSION}" = "${GECKODRIVER_VERSION}" ]; then
             build_msg INSTALL "geckodriver already installed"
             return
         fi