Fix build

[Gabriel-Trintinalia]

• Besu references were being resolved to arithmetization. I had to set transitive = false in the dependency to make it work. There is probably a smarter way to resolve this.
• The sequencer was being built using the main branch and not arith-dev. There were some adjustments in tracer.traceEndConflation() I don’t know if they are correct though.
• There was an error with SimulationValidator (?) I need to look into this
• Some references to the sequencer package yet in the code
• Remove the spillings.toml from the code. Should we have this file on the arithmetization repo?
• the line-limits file seems to be outdated. I had to include EXP = 32760 to make it work.