Pop_OS! 24.04 libicu is not installable

I can't install/update SDK 10.0.1 on Pop_OS! 24.04, although the initial 10.0.0 release installed without problems.

```
$ sudo apt install dotnet-sdk-10.0
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
dotnet-runtime-deps-10.0 : Depends: libicu78 but it is not installable or
libicu77 but it is not installable or
libicu76 but it is not installable or
libicu72 but it is not installable
E: Unable to correct problems, you have held broken packages.
```

There's only libicu74 in the repo:

```
$ apt search libicu7
Sorting... Done
Full Text Search... Done
libicu74/noble-updates,now 74.2-1ubuntu3.1 amd64 [installed]
International Components for Unicode

$ uname -a
Linux pop-os 6.17.9-76061709-generic #202511241048~1764607909~24.04~df6b2b6 SMP PREEMPT_DYNAMIC Mon D x86_64 x86_64 x86_64 GNU/Linux
```