[Snyk] Security upgrade rails-erd from 1.6.1 to 1.7.0

[matievisthekat]

Snyk has created this PR to fix 1 vulnerabilities in the rubygems dependencies of this project.

Snyk changed the following file(s):

• Gemfile
• Gemfile.lock

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Improper Restriction of XML External Entity Reference ('XXE') SNYK-RUBY-REXML-7814166	696

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[codeclimate]

Code Climate has analyzed commit 489a75b and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 30.9% (0.0% change).

View more on Code Climate.