scripts: Add .inc files to doc8 check #659

Job	Run time
Code style	10s
Modern Python (3.11)	4m 3s
Modern Python (3.12)	3m 17s
Modern Python (3.13)	4m 25s
Modern Python (3.9)	3m 48s
Modern Python (3.10)	4m 5s
Modern Python (3.14)	3m 26s
Build, test and deploy container images (kas-isar, debian-bookworm)	11m 22s
Build, test and deploy container images (kas, debian-bookworm)	15m 33s
Build, test and deploy container images (kas, debian-trixie)	30m 42s
Build, test and deploy container images (kas-isar, debian-trixie)	25m 49s
cleanup untagged kas-isar containers	23s
cleanup untagged kas containers	21s
	1h 47m 24s

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