fix loading of shared oci8/pdo_oci ext

Author: mvorisek

.github/actions/install-linux/action.yml

@@ -10,3 +10,5 @@ runs:
         sudo chmod 777 /etc/php.d
         echo mysqli.default_socket=/var/run/mysqld/mysqld.sock    > /etc/php.d/mysqli.ini
         echo pdo_mysql.default_socket=/var/run/mysqld/mysqld.sock > /etc/php.d/pdo_mysql.ini
+        echo extension=oci8.so    > /etc/php.d/oci8.ini
+        echo extension=pdo_oci.so > /etc/php.d/pdo_oci.ini