This update for djvulibre fixes the following issues:

- CVE-2021-32490 [bsc#1185895]: Out of bounds write in function DJVU:filter_bv() via crafted djvu file
- CVE-2021-32491 [bsc#1185900]: Integer overflow in function render() in tools/ddjvu via crafted djvu file
- CVE-2021-32492 [bsc#1185904]: Out of bounds read in function DJVU:DataPool:has_data() via crafted djvu file
- CVE-2021-32493 [bsc#1185905]: Heap buffer overflow in function DJVU:GBitmap:decode() via crafted djvu file