Test

test, signal: remove trailing spaces and remove executable bits of source file #574

Job	Run time
Test with DPDK enabled / test	13m 2s
Test with C++20 modules enabled / test	11m 25s
Test (clang++, C++20, dev) / test	5m 47s
Test (clang++, C++20, debug) / test	7m 17s
Test (clang++, C++20, release) / test	6m 2s
Test (clang++, C++23, debug) / test	8m 13s
Test (clang++, C++23, dev) / test	5m 37s
Test (clang++, C++23, release) / test	15m 47s
Test (g++, C++20, debug) / test	9m 32s
Test (g++, C++20, dev) / test	4m 57s
Test (g++, C++20, release) / test	7m 31s
Test (g++, C++23, debug) / test	12m 15s
Test (g++, C++23, dev) / test	7m 48s
Test (g++, C++23, release) / test	9m 28s
	2h 4m 41s

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