RFS: node-typescript (update)

[weepingclown <weepingclown@disroot.org>]

Hello,

Requesting sponsorship for a new package update.
The package details are as given below;

package name: node-typescript
old debian version:  4.8.4+ds1-2
new debian version: 4.9.5+ds1-1
salsa repo (fork): https://salsa.debian.org/weepingclown/node-typescript

I have built the package in a clean sbuild environment and made sure
that lintian shows no errors.

There is a need for v4.9.5 of typescript when trying to package node-prosemirror-tables (#1054136).
Some rebuilds of reverse dependencies seem to fail for this typescript update, so setting the release target as experimental.

Thank you.