checkstyle vulnerabilities (Ubuntu)

2 vulnerabilities.

• checkstyle Ubuntu XML external entity (XXE) processing ('external-parameter-entities' feature was not fully disabled)) CVE-2019-10782 Fix available 5.3 MediumJanuary 30, 2020
• checkstyle Ubuntu Moderate severity vulnerability that affects com.puppycrawl.tools:checkstyle CVE-2019-9658 Fix available 5.3 MediumMarch 11, 2019