benchmarks/spp: Update v0.4 -> v0.4.2

Version 0.4.2

• Fixed globals in master and slave (had a few non-static globals with same name)

Version 0.4.1

• Fixed bug that included random bytes in the hash input used to generate the packet id in cases where the captured bytes did not include the TCP option bytes or the first 12 bytes for TCP/UDP payload. Now for the TCP options, the UDP/TCP payloads and data for non UDP/TCP, the capture length (snap size) will limit the hash input.

Changes: https://bitbucket.org/caia-swin/spp/src/v0.4.2/Changelog.txt
PR: 251002