gitlab-ci: Fix mismatched MSVC toolset version and CI job tag
In commit 1a0ca75f (ci: Add warning icons in GL pipelines, 2023-04-26,
v2.1.0-rc1~3^2~52^2
) from !3123 (merged), the MSVC toolset version was updated, but the
corresponding CI job tag was not.
Backport: release-2.1
Backport: release