update for drupal 9

CHANGELOG.md

-Version 1.24 (not yet released)
+Version 1.24
 ============
 
-- Compatibility fix for Symfony ^3.4 ^4.0.
+* Compatibility fix for Symfony ^3.4 ^4.0.
 
 Version 1.23
 ============

info.xml

@@ -16,8 +16,8 @@
     <url desc="Licensing">http://www.gnu.org/licenses/agpl-3.0.html</url>
     <url desc="Action-Provider Extension">https://lab.civicrm.org/extensions/action-provider</url>
   </urls>
-  <releaseDate>2021-03-02</releaseDate>
-  <version>1.24-dev</version>
+  <releaseDate>2021-03-05</releaseDate>
+  <version>1.24</version>
   <develStage>stable</develStage>
   <compatibility>
     <ver>4.7</ver>