[Snyk] Fix for 1 vulnerabilities

[snyk-bot]

Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • package.json

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	661/1000 Why? Recently disclosed, Has a fix available, CVSS 7.5	Regular Expression Denial of Service (ReDoS) SNYK-JS-NORMALIZEURL-1296539	Yes	No Known Exploit

(*) Note that the real score may have changed since the PR was raised.

Commit messages

Package name: is-online

The new version differs by 2 commits.

• 8b092e0 7.0.0
• 302d8e5 Rewrite to use public-ip check (#39)

See the full diff

Package name: is-reachable

The new version differs by 6 commits.

• bf10000 3.0.0
• a308471 Meta tweaks
• f8638da update dependencies, fix lint, require node 8
• f2aa0b0 fix case of unknown service port lookup - fixes #31
• d45c4da Meta tweaks
• 21e0d97 Update readme.md to show that options is an object (#24)

See the full diff

Check the changes in this PR to ensure they won't cause issues with your project.

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[xtonousou]

Seems legit.