Bump strum to v0.27

[gkobeaga]

This is a breaking change in the strum public API. Changed items in the public API for v0.27:

-pub fn strum::EnumProperty::get_int(&self, _prop: &str) -> core::option::Option<usize>
+pub fn strum::EnumProperty::get_int(&self, _prop: &str) -> core::option::Option<i64>

get_int is not used in biblatex. I am proposing this change because I am getting a strum version mismatch when compiling a project that depends on biblatex and also depends on the updated version of strum.

Looking at the typst dependency tree, strum is only used in biblatex, via hayagriva via typst-library, so no impact is expected in typst.

[PgBiel]

Seems fine in principle. cc @laurmaedje

[laurmaedje]

A bit unfortunate that this is a breaking change in biblatex's public API, but I guess never updating strum again isn't the solution either, so it's probably fine?

[gkobeaga]

To be clear, this does not change biblatex's public API. It is a breaking change for strum, but only for a function not used in biblatex. Sorry if I was not clear in the description.

[laurmaedje]

Okay, thanks for the clarification! Then, it's no problem at all.