ci: scorecard: Remove non-main branch #774

Job	Run time
standalone-examples (bootstrap_server)	1m 18s
standalone-examples (client)	2m 52s
standards (clang-18, 99, ON)	3m 23s
standalone-examples (lightclient)	2m 3s
standards (clang-18, 99, OFF)	1m 14s
standalone-examples (server)	2m 38s
standards (clang-18, 11, ON)	1m 10s
standards (clang-18, 11, OFF)	3m 22s
standards (gcc-13, 99, ON)	2m 23s
standards (gcc-13, 99, OFF)	1m 18s
standards (gcc-13, 11, ON)	1m 23s
standards (gcc-13, 11, OFF)	2m 27s
	25m 31s

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