Fix not working on new Go versions

[spowelljr]

Before:

F1107 13:50:23.206636   83860 slowjam.go:66] parse: failed to parse int on line: "syscall.syscall6(0x1400079c680?, 0x4?, 0x4?, 0x104d9a980?, 0x140008cc2b8?, 0x1000128c8?, 0x110244350?)"
exit status 255

Fixing this required updating github.com/maruel/panicparse/stack, which required updating to v2 which required updating lots of code. I did extensive testing to ensure the outputs matched the previous output values to not break anything.