Optional chaining introduced in v13.15.22 causes runtime error on older Node versions

[NoCtrlZ1110]

Describe the bug
Our application suddenly broke today because validator automatically updated to v13.15.22 (published ~7 hours ago).
The new build on npm seems to contain optional chaining (?.) inside the distributed code (e.g., in isMACAddress.js), which was never present in previous versions (e.g., v13.15.20).

This change causes syntax errors on environments running older Node.js versions that don’t support optional chaining.

Examples

Reproductions
N/A

Additional context
Validator.js version: 13.15.22
Node.js version: 10

[WikiRik]

I was already afraid this would happen. I will try to publish a new release soon that fixes this

EDIT: For context; I had to slightly update the build tooling to get it to pass locally, but as it was failing on optional chaining I already expected that fixing that might cause other issues. Because I don't want to push a different build to the same tag and because I had an issue open to fix the publish pipeline, I have combined this in #2631 so 13.15.23 will re-establish Node 10 support

[xliez]

+1
I hava same problem

[WikiRik]

I have published 13.15.23 which resolves this issue