[Snyk] Security upgrade pdfjs-dist from 2.16.105 to 4.2.67

[VadimDez]

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
	726/1000 Why? Recently disclosed, Has a fix available, CVSS 8.8	Arbitrary Code Injection SNYK-JS-PDFJSDIST-6810403	Yes	No Known Exploit

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

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

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[manaskumar-tf]

@VadimDez , by when we can expect the bug fix?

[xiangjuzou]

would like to see an upgrade of the pdfjs-dist dependency as well!

[iPatilRohit]

Hello @VadimDez @xiangjuzou, I required upgraded internal lib pdfjs-dist in ng2-pdf-viewer, by when will it be released on NPM

[uchy4]

@VadimDez Hi, is there a ETA on this merge? Thanks so much!