Update dependency junit:junit to v4.13.1 - abandoned

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This PR contains the following updates:

Package	Type	Update	Change
junit:junit (source)	compile	minor	4.12 -> 4.13.1
junit:junit (source)	dependencies	minor	4.12 -> 4.13.1

By merging this PR, the below issues will be automatically resolved and closed:

Severity	CVSS Score	CVE	GitHub Issue
Medium	5.5	CVE-2020-15250	#4

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