[Release 1.28] Bump cilium to v1.16.0

[rbrtbnfgl]

Backport for #6499

[VestigeJ]

$ rke2 -v

rke2 version v1.28.12+rke2r1 (27989db0c83739c9f560e0567a3bf76177947122)
go version go1.22.5 X:boringcrypto

$ kg deploy cilium-operator -n kube-system -o yaml | grep -i image:

        image: rancher/mirrored-cilium-operator-generic:v1.15.5

$ COMMIT=0be231b93ac3a3bc05f26e2a5b22ff9e7a63aa90
$ sudo INSTALL_RKE2_COMMIT=$COMMIT INSTALL_RKE2_EXEC=server ./install-rke2.sh

[INFO]  using commit 0be231b93ac3a3bc05f26e2a5b22ff9e7a63aa90 as release
[INFO]  downloading airgap checksums at https://rke2-ci-builds.s3.amazonaws.com/rke2-images.linux-amd64-0be231b93ac3a3bc05f26e2a5b22ff9e7a63aa90.tar.zst.sha256sum
[INFO]  downloading airgap tarball at https://rke2-ci-builds.s3.amazonaws.com/rke2-images.linux-amd64-0be231b93ac3a3bc05f26e2a5b22ff9e7a63aa90.tar.zst
[INFO]  downloading checksums at https://rke2-ci-builds.s3.amazonaws.com/rke2.linux-amd64-0be231b93ac3a3bc05f26e2a5b22ff9e7a63aa90.tar.gz.sha256sum
[INFO]  downloading tarball at https://rke2-ci-builds.s3.amazonaws.com/rke2.linux-amd64-0be231b93ac3a3bc05f26e2a5b22ff9e7a63aa90.tar.gz
[INFO]  verifying airgap tarball
[INFO]  installing airgap tarball to /var/lib/rancher/rke2/agent/images
[INFO]  verifying tarball
[INFO]  unpacking tarball file to /usr/local

$ sudo systemctl restart rke2-server
$ kg deploy cilium-operator -n kube-system -o yaml | grep -i image:

image: rancher/mirrored-cilium-operator-generic:v1.16.0

$ rke2 -v

rke2 version v1.28.12+dev.0be231b9 (0be231b93ac3a3bc05f26e2a5b22ff9e7a63aa90)
go version go1.22.5 X:boringcrypto