What were you trying to do that didn't work?

build dnf5 in EPEL10

What is the impact of this issue to you?

libsolv 0.7.29 does not support all features of dnf5, namely the recently-merged https://github.com/rpm-software-management/dnf5/pull/1582

We should rebase libsolv to 0.7.30 which has the new feature required for the latest version of dnf5, bug fixes, and nothing more.

From the libsolv changelog:
```
Version 0.7.30

• selected bug fixes:
    * removed dependency on external find program in the repo2solv
      tool
    * bindings: fix return value of repodata.add_solv()
• new features:
    * new SOLVER_FLAG_FOCUS_NEW flag
  ```