Update information for CVE-2018-10768/poppler

The issue was fixed in 0.37 upstream, the first version in unstable of
poppler was accordingly 0.38.0-2.

The upstream fix is
https://cgit.freedesktop.org/poppler/poppler/commit/?id=942adfc25e7a00ac3cf032ced2d8949e99099f70
and a bisect confirms

	# broken: [a2f0e4b1fd8b3d9675cc00a561094bd78a63d048] 0.24.5
	git bisect broken a2f0e4b1fd8b3d9675cc00a561094bd78a63d048
	# fixed: [88415426df363f1ef86b741cbc3587a89d31aa1f] 0.41.0
	git bisect fixed 88415426df363f1ef86b741cbc3587a89d31aa1f
	# broken: [ce782112746f629a8e7be6f2daf6ece6ab19917d] Merge remote-tracking branch 'origin/poppler-0.26'
	git bisect broken ce782112746f629a8e7be6f2daf6ece6ab19917d
	# broken: [1aae63ebc6fffe9fa1a2898e4ed733c22e312015] annots: Add popup annots without a markup annot associated to the list of annots
	git bisect broken 1aae63ebc6fffe9fa1a2898e4ed733c22e312015
	# broken: [de1ece5c929c3f46c04be76b4b72f6371911fd1a] Poppler 0.36
	git bisect broken de1ece5c929c3f46c04be76b4b72f6371911fd1a
	# fixed: [ef518d601836fcedb8b558447f10c846e4038318] doc: Add poppler_orientation_get_type to poppler-sections.txt
	git bisect fixed ef518d601836fcedb8b558447f10c846e4038318
	# fixed: [44e1a2f715d0da8bb2941da296faab7ee144cfc2] Poppler 0.37
	git bisect fixed 44e1a2f715d0da8bb2941da296faab7ee144cfc2
	# fixed: [0fa5c17ea409c3fdfe1e3a97ff5e4bae96da1cae] Fix crash on JBIG2Stream::readHalftoneRegionSeg for malformed documents
	git bisect fixed 0fa5c17ea409c3fdfe1e3a97ff5e4bae96da1cae
	# broken: [7028f835a603e12dd73452a39f56ac0b633207b2] PageTransition D is a number not an int
	git bisect broken 7028f835a603e12dd73452a39f56ac0b633207b2
	# broken: [9aa19159bff4db02889cba48b9b31e40247e5314] Catalog::cachePageTree(): recover from out of memory condition
	git bisect broken 9aa19159bff4db02889cba48b9b31e40247e5314
	# fixed: [942adfc25e7a00ac3cf032ced2d8949e99099f70] Fix crash on AnnotInk::draw for malformed documents
	git bisect fixed 942adfc25e7a00ac3cf032ced2d8949e99099f70
	# first fixed commit: [942adfc25e7a00ac3cf032ced2d8949e99099f70] Fix crash on AnnotInk::draw for malformed documents