MDL-81667 libraries: upgrade to version 4.10.0 of axe-core.

lib/behat/axe/readme_moodle.txt

@@ -13,9 +13,9 @@ using your desired editor and look for the version number of axe-core. Alternati
 - MacOS:
     cat package.json | grep axe-core
 - Linux:
-    cat package.json | grep '"version"' | awk -F '"' '{print $4}'
+    cat package.json | grep axe-core
     or
-    jq -r '.version' package.json
+    jq -r '.devDependencies."axe-core"' package.json
 
 2/ Copy the following file to your local Moodle directory, to replace the old one:
 

lib/tests/behat/behat_accessibility.php

@@ -14,15 +14,6 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Steps definitions to open and close action menus.
- *
- * @package    core
- * @category   test
- * @copyright  2020 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 use Behat\Mink\Exception\{DriverException, ExpectationException};
 
 // NOTE: no MOODLE_INTERNAL test here, this file may be required by behat before including /config.php.
@@ -45,8 +36,7 @@ class behat_accessibility extends behat_base {
      * There are standard tags to ensure WCAG 2.1 A, WCAG 2.1 AA, and Section 508 compliance.
      * It is also possible to specify any desired optional tags.
      *
-     * The list of available tags can be found at
-     * https://github.com/dequelabs/axe-core/blob/v4.8.4/doc/rule-descriptions.md.
+     * See {@link https://github.com/dequelabs/axe-core/blob/v4.10.0/doc/rule-descriptions.md} for the list of available tags
      *
      * @Then the page should meet accessibility standards
      * @Then the page should meet accessibility standards with :extratags extra tests

lib/thirdpartylibs.xml

@@ -17,7 +17,7 @@
     <location>behat/axe</location>
     <name>axe-core</name>
     <description>Accessibility testing engine for websites and other HTML-based user interfaces.</description>
-    <version>4.8.4</version>
+    <version>4.10.0</version>
     <license>MPL</license>
     <licenseversion>2.0</licenseversion>
     <repository>https://github.com/dequelabs/axe-core</repository>