This update for zxing-cpp fixes the following issues:

- CVE-2021-28021: Fixed buffer overflow vulnerability in function stbi__extend_receive in stb_image.h via a crafted JPEG file. (bsc#1191743).
- CVE-2021-42715: Fixed buffer overflow in stb_image PNM loader (bsc#1191942).
- CVE-2021-42716: Fixed denial of service in stb_image HDR loader when reading crafted HDR files (bsc#1191944).