ethtool: Update version from 4.5 to 4.13

Change-log [1]:

> Version 4.13 - October 27, 2017
>
>         * Fix: Do not return error code if no changes were attempted.
>         * Fix: Fix formatting of advertise bitmask
>         * Feature: Document 56000 advertise link modes
>         * Fix: fix the rx vs tx mixup in set channel message
>         * Feature: add support for HWTSTAMP_FILTER_NTP_ALL
>         * Feature: Add DMA Coalescing support
>         * Feature: Remove UDP Fragmentation Offload error prints
>         * Feature: stmmac: Add macros for number of registers
>         * Feature: stmmac: Add DMA HW Feature Register
>
> Version 4.11 - June 2, 2017
>
>         * Feature: Support for configurable RSS hash function
>         * Feature: support queue and VF fields for rxclass filters
>         * Feature: Add support for 2500baseT/5000baseT link modes
>         * Fix: Fix SFF 8079 cable technology bit parsing
>         * Fix: sync help output for -x/-X with man page
>
> Version 4.10 - March 24, 2017
>
>         * Fix: Fix the "advertise" parameter logic.
>         * Feature: Implement ETHTOOL_PHY_GTUNABLE/ETHTOOL_PHY_STUNABLE and PHY downshift
>         * Feature: add register dump support for fjes driver (-d option)
>
> Version 4.8 - October 3, 2016
>
>         * Feature: QSFP Plus/QSFP28 Diagnostics Information Support
>         * Feature: Enhancing link mode bits to support 25G/50G/100G
>         * Feature: add support for 1000BaseX and missing 10G link mode
>         * Fixes: address Coverity issues 1363118 - 1363125
>
> Version 4.6 - June 26, 2016
>
>         * Feature: Support register dump on Intel X550 NICs (-d option)
>         * Fix: Correct some reported register offsets on Intel 10GbE NICs
>           (-d option)
>         * Feature: Add IPv6 support to NFC (-n, -N, -u and -U options)
>         * Feature: Add support for ETHTOOL_xLINKSETTINGS ioctls (no option
>           and -s option)
>         * Feature: Use netlink socket when AF_INET not available

[1] https://git.kernel.org/pub/scm/network/ethtool/ethtool.git/tree/NEWS

ethtool.be0

@@ -1,6 +1,6 @@
 #!/usr/bin/env beesh
 
-# BEE_VERSION ethtool-4.5-0
+# BEE_VERSION ethtool-4.13-0
 
 SRCURL[0]="https://www.kernel.org/pub/software/network/ethtool/ethtool-${PKGVERSION}.tar.xz"