ci: use mariadb 10.6 (#33220)

https://github.com/frappe/frappe/pull/19116

[skip ci]
diff --git a/.github/helper/install.sh b/.github/helper/install.sh
index 2bb950f..2b3d8cb 100644
--- a/.github/helper/install.sh
+++ b/.github/helper/install.sh
@@ -24,15 +24,14 @@
 
 
 if [ "$DB" == "mariadb" ];then
-    mysql --host 127.0.0.1 --port 3306 -u root -e "SET GLOBAL character_set_server = 'utf8mb4'"
-    mysql --host 127.0.0.1 --port 3306 -u root -e "SET GLOBAL collation_server = 'utf8mb4_unicode_ci'"
+    mysql --host 127.0.0.1 --port 3306 -u root -proot -e "SET GLOBAL character_set_server = 'utf8mb4'"
+    mysql --host 127.0.0.1 --port 3306 -u root -proot -e "SET GLOBAL collation_server = 'utf8mb4_unicode_ci'"
 
-    mysql --host 127.0.0.1 --port 3306 -u root -e "CREATE USER 'test_frappe'@'localhost' IDENTIFIED BY 'test_frappe'"
-    mysql --host 127.0.0.1 --port 3306 -u root -e "CREATE DATABASE test_frappe"
-    mysql --host 127.0.0.1 --port 3306 -u root -e "GRANT ALL PRIVILEGES ON \`test_frappe\`.* TO 'test_frappe'@'localhost'"
+    mysql --host 127.0.0.1 --port 3306 -u root -proot -e "CREATE USER 'test_frappe'@'localhost' IDENTIFIED BY 'test_frappe'"
+    mysql --host 127.0.0.1 --port 3306 -u root -proot -e "CREATE DATABASE test_frappe"
+    mysql --host 127.0.0.1 --port 3306 -u root -proot -e "GRANT ALL PRIVILEGES ON \`test_frappe\`.* TO 'test_frappe'@'localhost'"
 
-    mysql --host 127.0.0.1 --port 3306 -u root -e "UPDATE mysql.user SET Password=PASSWORD('travis') WHERE User='root'"
-    mysql --host 127.0.0.1 --port 3306 -u root -e "FLUSH PRIVILEGES"
+    mysql --host 127.0.0.1 --port 3306 -u root -proot -e "FLUSH PRIVILEGES"
 fi
 
 if [ "$DB" == "postgres" ];then