[Snyk] Fix for 1 vulnerabilities

[gregswindle]

This PR was automatically created by Snyk using the credentials of a real user.

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 - package-lock.json #### Vulnerabilities that will be fixed ##### With an upgrade: Severity | Priority Score (*) | Issue | Breaking Change | Exploit Maturity :-------------------------:|-------------------------|:-------------------------|:-------------------------|:-------------------------  | **484/1000**
**Why?** Has a fix available, CVSS 5.4 | Open Redirect
[SNYK-JS-GOT-2932019](https://snyk.io/vuln/SNYK-JS-GOT-2932019) | Yes | No Known Exploit (*) Note that the real score may have changed since the PR was raised.

Commit messages

Package name: github-username

The new version differs by 9 commits.

• a1c09b8 6.0.0
• 1c1a48c Require Node.js 10
• 9e95e07 Migrate to `@ octokit/rest` (#12)
• 2640b0d 5.0.1
• c353a93 TypeScript - Properly mark `token` as optional (#10)
• 929895f Create funding.yml
• 0fbe5a7 5.0.0
• 1de6d8f Meta tweaks
• fe861db Require Node.js 8, add TypeScript definition (#9)

See the full diff

Package name: yeoman-generator

The new version differs by 250 commits.

• aad5fac 5.0.0
• 4f4a802 Add transform to expected priority.
• 57d240c Remove only from test.
• 812751f Lint fix
• 33d050f Implement getFeatures for singleton support.
• 99ac2c5 Add transform priority.
• 5136342 Bump peter-evans/create-pull-request from v3.8.0 to v3.8.2 (#1278)
• fa408bd Bump actions/stale from v3.0.15 to v3.0.16 (#1275)
• d7103f3 Drop reference from yeoman-test repository
• b36f294 Bump yeoman-environment to 3.0.0-rc.1
• ee0d1ad Hide shared options and drop support for kebab case options.
• 310f72d Fix spawn destinationRoot.
• 8f4afe9 Switch composeWith to use environment.
• e9d0a15 Remove support for chainning at composeWith.
• c2245e1 Switch from node 10 to 12 at Travis.
• 5be7b07 5.0.0-rc.0
• 8a448b4 Bump yeoman-environment to 3.0.0-rc.0
• 6d6c4b0 Changes to queueTransformStream
• 632d60d Add option to skip parsing options.
• 7050e53 Pass destinationRoot to spawn-command by default.
• 097cd20 Implement package-json mixin.
• 52c90a2 Add merge support to Storage.
• f4336d9 5.0.0-beta.1
• 1952724 Change version to 5.0.0-beta.0

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