.github/workflows: Use Fedora 41 for integration tests

The usage of bpf_object_open_opts in libbpf-rs assumes libbpf 1.4, and
with older versions the integration tests end up with an error:

  libbpf: bpf_object_open_opts has non-zero extra bytes

Signed-off-by: Daiki Ueno <[email protected]>

Author: ueno

.github/workflows/rust.yml

@@ -22,7 +22,7 @@ jobs:
     name: Fedora tests
     runs-on: ubuntu-latest
     container:
-      image: registry.fedoraproject.org/fedora:40
+      image: registry.fedoraproject.org/fedora:41
       options: --privileged
     steps:
     - uses: actions/checkout@v4