static-analysis failure due to `yarn run stylelint`

In https://gitlab.com/gitlab-org/gitlab-foss/-/jobs/394014104:

92 All static analyses passed successfully, but we have warnings:
93 **** yarn run stylelint had the following warning(s):
94 Browserslist: caniuse-lite is outdated. Please run next command `yarn upgrade`

yarn upgrade does seem to make the problem go away, but it upgrades a lot of dependencies.