[librsvg/librsvg-2.55: 13/13] Merge branch 'backport-ci-fixes-2.55' into 'librsvg-2.55'

[Federico Mena Quintero <federico src gnome org>]

commit a4fe5d9f3c1692d4d36af30947c506d9273fd44f
Merge: 0613ce116 922265069
Author: Federico Mena Quintero <federico gnome org>
Date:   Thu Sep 8 17:30:24 2022 +0000

    Merge branch 'backport-ci-fixes-2.55' into 'librsvg-2.55'
    
    Backport fixes to the CI from the main branch
    
    See merge request GNOME/librsvg!743

 .gitlab-ci.yml           | 64 +++++++++++++++++++++++++-----------------------
 ci/container_builds.yml  |  4 ++-
 ci/install-grcov.sh      |  8 ++++++
 ci/install-rust-tools.sh | 11 +++++++++
 ci/install-rust.sh       | 16 ------------
 5 files changed, 55 insertions(+), 48 deletions(-)
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