Bump zt-zip from 1.12 to 1.13

[dependabot[bot]]

Bumps zt-zip from 1.12 to 1.13.

Changelog

Sourced from zt-zip's changelog.

1.13 (2nd May 2018)

• Fixed a possible security vulnerability reported by Snyk Security Research Team
• Fixed same-zip bug for transformEntry method

Commits

• 2aa8c72 Prepare release zt-zip-1.13
• 34ffa7b More updates to the changelog before the release
• 863e82d Updated changelog for a 1.13 release
• a264aec Removing JDK10 from the Travis testing matrix
• 646b533 Added jdk9 and jdk10 into the matrix
• 92583bb Changed the ZIP archives to fix the test
• 5820e66 Fixing brainfart in some tests
• 5c68d26 Changed Travis to use the maven wrapper
• a8d3484 Added Maven Wrapper to the project, mvn ver 3.5.2
• e713af9 Renamed Unwraper to Unwrapper
• Additional commits viewable in compare view

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