GitLab CI now supports timeout for specific jobs

Faustin Lammlerrequested to merge
faust/mariadb-10.5:ci-timeout into master

The default timeout setup is 1 hour and it's not sufficient for build jobs. Previously we asked contributor to setup this timeout to 2 hours in their GitLab preferences, see https://docs.gitlab.com/ce/ci/pipelines/settings.html#timeout and https://wiki.debian.org/Teams/MySQL/patches.

Since GitLab 12.3, the timeout can be specified directly on job defintion, see https://docs.gitlab.com/ce/ci/yaml/README.html#timeout.

Plus fix a typo.

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