Update github actions. · eycorsican/leaf@65a3c10

The following actions use a deprecated Node.js version and will be forced to run on node20: hecrj/setup-rust-action@v1. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

unused variable: `gw`

irrefutable `if let` pattern

irrefutable `if let` pattern

function `test_tcp_half_close_on_configs` is never used

function `file_hash` is never used

function `test_data_transfering_reliability_on_configs` is never used

function `run_tcp_echo_server` is never used

function `run_udp_echo_server` is never used

function `run_echo_servers` is never used

function `run_leaf_instances` is never used

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