ktorrent and libktorrent: update to 25.12.1.

[mnabid]

Testing the changes

• I tested the changes in this PR: YES

Local build testing

• I built this PR locally for these architectures:
  • Native builds:
    • x86_64
    • x86_64-musl
    • i686
  • Crossbuilds:
    • aarch64
    • aarch64-musl

[mnabid]

Run classabbyamp/treeless-checkout-action@v1
  with:
    ref: refs/pull/58624/merge
    repository: void-linux/void-packages
    server_url: https://github.com/
Run $GITHUB_ACTION_PATH/checkout.sh
  $GITHUB_ACTION_PATH/checkout.sh
  shell: bash --noprofile --norc -e -o pipefail {0}
  env:
    GITHUB_REF: refs/pull/58624/merge
    REPOSITORY: void-linux/void-packages
    SERVER_URL: https://github.com/
OCI runtime exec failed: exec failed: unable to start container process: exec: "bash": executable file not found in $PATH
Error: Process completed with exit code 127.

Something wrong with the CI builder? :/