CI: Fail on cppcheck.sh error #14564

Job	Run time
package-indep (debian:bookworm)	14m 52s
rip-and-test	12m 13s
package-arch (ubuntu-24.04-arm, debian:bookworm)	13m 34s
package-arch (ubuntu-24.04, debian:sid)	13m 35s
package-arch (ubuntu-24.04, debian:bookworm)	13m 35s
rip-and-test-clang	12m 29s
package-arch (ubuntu-24.04-arm, debian:sid)	13m 49s
package-indep (debian:trixie)	15m 14s
htmldocs	13m 28s
shellcheck	31s
package-arch (ubuntu-24.04, debian:trixie)	13m 3s
package-arch (ubuntu-24.04-arm, debian:trixie)	14m 34s
package-indep (debian:sid)	13m 22s
cppcheck	5m 25s
rip-rtai	4m 51s
Release packages	0s
	2h 54m 35s

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