Describe the current state

The current project is using Zig 0.13.
Now that Zig 0.14 is released we should plan the migration to it.

Describe the desired state

0.14 is the minimum version supported by the repo.

Proposed implementation

There are 2 particular breaking changes that we need to amend:

1. @setCold is now @branchHint, used in here and here

2. attributes.Attributes.from uses metaprogramming to convert the anytype fields passed to populate attributes. This is changed and needs an update, it can be done by looking at what the std.fmt namespace printing is doing

We can also specify the minimum Zig version in build.zig.zon, although that's not enforced AFAICT.