ci: Rebuild mysqlclient

.github/helper/install.sh

@@ -4,10 +4,14 @@ set -e
 
 cd ~ || exit
 
+
+curl -LsS https://r.mariadb.com/downloads/mariadb_repo_setup | sudo bash
 sudo apt update
 sudo apt remove mysql-server mysql-client
 sudo apt install libcups2-dev redis-server mariadb-client libmariadb-dev
 
+pip cache remove mysqlclient
+
 pip install frappe-bench
 
 githubbranch=${GITHUB_BASE_REF:-${GITHUB_REF##*/}}