core: bump ksp from 2.0.20-1.0.24 to 2.1.0-1.0.29 in /core #15202

Job	Run time
Check commits	7s
Build (core-build, core)	1m 1s
Build (editoast, editoast-test)	17s
Check dockerfiles	9s
Build (gateway-test, gateway-standalone, gateway-front)	1m 15s
Build (front-build, front-tests, front-devel, front-nginx)	16s
Build (osrdyne, osrdyne-test)	19s
Check final newline	7s
Check railjson generator	1m 49s
Check generated railjson sync	20s
Check scripts	6s
Check infra schema sync	16s
Check integration tests	1m 24s
Check osrd schema	46s
Check reuse compliance	9s
Check toml	5s
Check core	0s
Check editoast lints	0s
Check editoast tests	0s
Check editoast openapi	0s
Check front	0s
Check front rtk sync	0s
Check gateway	0s
Check osrdyne	0s
End to end tests	0s
Integration tests	0s
	8m 26s

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