introduce 'excludes' option for tests

[jacobmealey]

Addresses hexadecimal changes from curl 8.15. I've also duplicated the tests that were failing with the new uppercase hex values.

Thanks @charles2910 for reporting this bug
fixes: #394

[jacobmealey]

Not sure why the curl for win is failing. Will investigate tomorrow

[jacobmealey]

The curl-for-win build is failing on my clone of trurl on master, which was synced this morning: https://github.com/jacobmealey/urler/actions/runs/16097961365/job/45423345923
Both failing builds have the same error

ld.lld-19: error: undefined symbol: if_nametoindex

The daily builds on the curl-for-win repo are passing.

cc @vszakats

[vszakats]

@jacobmealey Thanks for reporting this. Indeed, static libcurl needs linking
an additional Windows system lib (when building for Vista or up) after a recent
update, and I missed to sync curl-for-win's trurl build to accommodate for that.

Is it better after this?:
curl/curl-for-win@b39be5a

(it's enough to retry the CI job or push any change to trigger a fresh run)

[jacobmealey]

@vszakats that worked! Thank you!

[jacobmealey]

I've just checked trurl with 8.16 rc1 and all the tests pass with this branch.