The commit e5c7ae4 seemed to (potentially erronously?) remove a number of
spaces following the left `|` bar of some graphical report handler tests.
That change had no effect on the `syntax_highlighter_on_real_file()`
test, presumably because the trailing whitespace is removed by
`strip_ansi_escapes::strip_str()`, but it did break the
`triple_adjacent_highlight()` and `non_adjacent_hightlight()` tests.
Restoring the spaces removed in e5c7ae4 fixes the failing tests on main.
* fix(ci): move from minimal-versions to direct-minimal-versions