upgrade ejs package | CVE-2022-29078

[markoberholzer-es]

There is a critical vulnerability in the ejs package < 3.1.7 CVE-2022-29078.

I would be happy to make a pull request, but I see that many pull requests are still open.

[ancliffo]

This is also flagging a critical in our security scans. Is this library still being maintained? Looks like the pull request to update to an older version of ejs is still out there from three years ago: #490