Update stacks testnet node config to use correct burnchain epochs

[tharbert]

Description

A stacks testnet node fails to start with this configuration, throwing a panic due to incorrect burnchain epoch configuration:

INFO [1758668797.581118] [stacks-node/src/run_loop/neon.rs:558] [main] Start syncing Bitcoin headers, feel free to grab a cup of coffee, this can take a while
ERRO [1758668797.583847] [stacks-node/src/main.rs:255] [main] Process abort due to thread panic: panicked at stackslib/src/chainstate/burn/db/sortdb.rs:3071:17:
FATAL: tried to retcon epoch StacksEpoch { epoch_id: Epoch25, start_height: 6, end_height: 1900, block_limit: ExecutionCost { write_length: 15000000, write_count: 15000, read_length: 100000000, read_count: 15000, runtime: 5000000000 }, network_epoch: 10 } into epoch StacksEpoch { epoch_id: Epoch25, start_height: 6, end_height: 56457, block_limit: ExecutionCost { write_length: 15000000, write_count: 15000, read_length: 100000000, read_count: 15000, runtime: 5000000000 }, network_epoch: 10 }

Updating to mirror the working version here:

https://docs.stacks.co/reference/sample-configuration-files#stacks-node-testnet-config

This was tested using blockstack/stacks-core:3.2.0.0.1

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Type of Change

• API reference/documentation update

Does this introduce a breaking change?

No

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