Improve zombienet script

[moliholy]

This PR improves the zombienet script by directly downloading the corresponding polkadot binaries instead of building them from source.

[metricaez]

Not getting past a new era with block producing, neither with testnet or mainnet (paseo or polka relay) profiles. Config should be reviewed.

[moliholy]

Converting to draft until we find out what's going on when initializing the relay chain and onboarding parachains.

2025-04-10 16:39:12.011  WARN tokio-runtime-worker runtime::inclusion-inherent: Processing inherent data failed: <wasm:stripped>
2025-04-10 16:39:12.011 ERROR tokio-runtime-worker runtime: panicked at /Users/molina/.cargo/git/checkouts/polkadot-sdk-dee0edd6eefa0594/b6a646d/polkadot/runtime/parachains/src/paras_inherent/mod.rs:208:5:
Bitfields and heads must be included every block
2025-04-10 16:39:12.012  WARN tokio-runtime-worker babe: Proposing failed: Import failed: Error at calling runtime api: Execution failed: Execution aborted due to trap: wasm trap: wasm `unreachable` instruction executed
WASM backtrace:
error while executing at wasm backtrace:
    0: 0x7248bc - paseo_runtime.wasm!rust_begin_unwind
    1: 0xf78d - paseo_runtime.wasm!core::panicking::panic_fmt::hcbb12cbae8ad4653
    2: 0x66cb1f - paseo_runtime.wasm!<(TupleElement0,TupleElement1,TupleElement2,TupleElement3,TupleElement4,TupleElement5,TupleElement6,TupleElement7,TupleElement8,TupleElement9,TupleElement10,TupleElement11,TupleElement12,TupleElement13,TupleElement14,TupleElement15,TupleElement16,TupleElement17,TupleElement18,TupleElement19,TupleElement20,TupleElement21,TupleElement22,TupleElement23,TupleElement24,TupleElement25,TupleElement26,TupleElement27,TupleElement28,TupleElement29,TupleElement30,TupleElement31,TupleElement32,TupleElement33,TupleElement34,TupleElement35,TupleElement36,TupleElement37,TupleElement38,TupleElement39,TupleElement40,TupleElement41,TupleElement42,TupleElement43,TupleElement44,TupleElement45,TupleElement46,TupleElement47,TupleElement48,TupleElement49,TupleElement50,TupleElement51,TupleElement52,TupleElement53,TupleElement54,TupleElement55,TupleElement56,TupleElement57,TupleElement58,TupleElement59,TupleElement60,TupleElement61) as frame_support::traits::hooks::OnFinalize<BlockNumber>>::on_finalize::h3efe35aa7b631bc3
    3: 0x19bf8e - paseo_runtime.wasm!frame_executive::Executive<System,Block,Context,UnsignedValidator,AllPalletsWithSystem,COnRuntimeUpgrade>::finalize_block::hc870bf5b5ae7ade6
    4: 0x27477b - paseo_runtime.wasm!BlockBuilder_finalize_block

[alexggh]

Converting to draft until we find out what's going on when initializing the relay chain and onboarding parachains.

2025-04-10 16:39:12.011  WARN tokio-runtime-worker runtime::inclusion-inherent: Processing inherent data failed: <wasm:stripped>
2025-04-10 16:39:12.011 ERROR tokio-runtime-worker runtime: panicked at /Users/molina/.cargo/git/checkouts/polkadot-sdk-dee0edd6eefa0594/b6a646d/polkadot/runtime/parachains/src/paras_inherent/mod.rs:208:5:
Bitfields and heads must be included every block
2025-04-10 16:39:12.012  WARN tokio-runtime-worker babe: Proposing failed: Import failed: Error at calling runtime api: Execution failed: Execution aborted due to trap: wasm trap: wasm `unreachable` instruction executed
WASM backtrace:
error while executing at wasm backtrace:
    0: 0x7248bc - paseo_runtime.wasm!rust_begin_unwind
    1: 0xf78d - paseo_runtime.wasm!core::panicking::panic_fmt::hcbb12cbae8ad4653
    2: 0x66cb1f - paseo_runtime.wasm!<(TupleElement0,TupleElement1,TupleElement2,TupleElement3,TupleElement4,TupleElement5,TupleElement6,TupleElement7,TupleElement8,TupleElement9,TupleElement10,TupleElement11,TupleElement12,TupleElement13,TupleElement14,TupleElement15,TupleElement16,TupleElement17,TupleElement18,TupleElement19,TupleElement20,TupleElement21,TupleElement22,TupleElement23,TupleElement24,TupleElement25,TupleElement26,TupleElement27,TupleElement28,TupleElement29,TupleElement30,TupleElement31,TupleElement32,TupleElement33,TupleElement34,TupleElement35,TupleElement36,TupleElement37,TupleElement38,TupleElement39,TupleElement40,TupleElement41,TupleElement42,TupleElement43,TupleElement44,TupleElement45,TupleElement46,TupleElement47,TupleElement48,TupleElement49,TupleElement50,TupleElement51,TupleElement52,TupleElement53,TupleElement54,TupleElement55,TupleElement56,TupleElement57,TupleElement58,TupleElement59,TupleElement60,TupleElement61) as frame_support::traits::hooks::OnFinalize<BlockNumber>>::on_finalize::h3efe35aa7b631bc3
    3: 0x19bf8e - paseo_runtime.wasm!frame_executive::Executive<System,Block,Context,UnsignedValidator,AllPalletsWithSystem,COnRuntimeUpgrade>::finalize_block::hc870bf5b5ae7ade6
    4: 0x27477b - paseo_runtime.wasm!BlockBuilder_finalize_block

Root cause of the problem: #308 (comment).

TLDR a newer paseo relay runtime 1.5 or newer should work.