MGASA-2021-0290 Updated leptonica packages fix security vulnerabilities

Leptonica before 1.80.0 allows a denial of service application crash via an incorrect left shift in pixConvert2To8 in pixconv.c CVE-2020-36277. Leptonica before 1.80.0 allows a heap-based buffer over-read in findNextBorderPixel in ccbord.c CVE-2020-36278. Leptonica before 1.80.0 allows a heap-bas...