libseccomp: Update to version 2.6.0

libseccomp: Update to version 2.6.0

- Update from version 2.5.5 to 2.6.0
- Update of rootfile
- Changelog
    2.6.0
	- Update the syscall table for Linux v6.13
	- Add support for new arches: SuperH little and big endian, LoongArch, and
	  32-bit Motorola 68000
	- Add multiplexed syscall support for more arches: MIPS, SuperH, and PPC
	- Consolidate and simplify handling of multiplexed syscalls
	- Add support for the SECCOMP_FILTER_FLAG_WAIT_KILLABLE_RECV flag
	- Add support for transactions with the seccomp_transaction_start(),
	  seccomp_transaction_commit(), and seccomp_transaction_reject() APIs
	- Add a seccomp_precompute() API to generate the seccomp BPF filter prior to
	  seccomp_load() or seccomp_export_bpf_mem()
	- Add support for binary tree filters without syscalls
	- Add support for the kernel’s implementation change of
	  SECCOMP_IOCTL_NOTIF_ID_VALID
	- Add Python binding support for retrieving the notification file descriptor
	- Improved tooling to help track syscall table updates in the Linux kernel
	- Handle EINVAL error from the kernel when the WAIT_KILLABLE_RECV flag is
	  erroneously provided to the kernel
	- Fix a seccomp userspace notification issue where the file descriptor was
	  being requested more than once
	- Fix a bug where the internal filter state could be corrupted when a filter
	  rule addition fails
	- Fix potential memory leak in the internal management of filter snapshots
	- Utilize Cython rather than distutils in the Python bindings, due to
	  distutils’ deprecation
	- Many test and CI improvements and fixes
	- Many documentation improvements and updates

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>