chore(ci): minor upgrade mysql version in ci (#21630)

.circleci/config.yml

@@ -464,7 +464,7 @@ commands:
       - run:
           name: Initial setup
           command: |
-            curl -sL https://repo.mysql.com/mysql-apt-config_0.8.24-1_all.deb --output mysql-apt-config.deb
+            curl -sL https://repo.mysql.com/mysql-apt-config_0.8.29-1_all.deb --output mysql-apt-config.deb
             sudo dpkg -i mysql-apt-config.deb
             sudo apt-get update -q
             sudo apt-get install -y gettext pngcrush librsvg2-bin libmysqlclient-dev