do not ignore any of the generated headers #1006

Job	Run time
test_asan	4m 6s
bundled_gdal_coverage	5m 28s
test_distros_bundled (amazonlinux:2022)	15m 5s
test_distros_shared (ubuntu:22.04)	4m 12s
test_distros_shared (ubuntu:20.04)	3m 34s
test_distros_shared (debian:bullseye)	4m 1s
test_mac (16.x)	7m 53s
test_distros_shared (fedora:37)	6m 43s
test_mac_debug	8m 35s
test_mac (18.x)	7m 36s
test_distros_shared (centos:stream8)	5m 37s
test_node (16, shared)	3m 46s
test_mac (20.x)	7m 19s
test_node (16, bundled)	3m 56s
test_mac (21.x)	7m 30s
test_node (18, shared)	3m 39s
test_win (16.x)	17m 2s
test_node (18, bundled)	4m 5s
test_win_debug	17m 25s
test_win (18.x)	18m 47s
test_win (20.x)	18m 47s
test_win (21.x)	18m 3s
test_node (20, shared)	4m 15s
test_node (20, bundled)	3m 37s
test_node (21, shared)	3m 37s
test_node (21, bundled)	3m 50s
	3h 28m 28s

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