release: 4.9.0 (#5772)

* wip: changelog

* fixup

* fix: add +x to product.json in build-vscode

While testing a pre-release, there seems to be a bug with the file
permissions for `product.json`. Adding `chmod +x` to see if that fixes
it.

* chore: increase timeout

* fix: keep product.json file permissions in release

When we added the change to modify the `package.json` version using `mv`
and `jq` we didn't account for lost file permissions.

This caused a bug only happening in CI.

This should fix it by giving it 755 via `chmod`.

* trigger ci

* chore: update package.json bust cache

* fixup!: fix: keep product.json file permissions in release

* Revert "fix: add +x to product.json in build-vscode"

This reverts commit fc4d2b532f.

* chore: pin ubuntu runner in build code-server

* chore: update prettierignore

* chore: add notes to changelog

* chore: use ubuntu-22.04 for e2e

* chore: pin all jobs in build to ubuntu 20.04

* feat(wrapper): add tests for isChild

* fixup: include description ts-expect-error comment

* chore: update CHANGELOG

* chore: update Helm chart

* fixup: use our childProcess

* Update CHANGELOG.md

Co-authored-by: Asher <ash@coder.com>

Co-authored-by: Asher <ash@coder.com>

src/node/wrapper.ts

@@ -147,7 +147,7 @@ abstract class Process {
  * Child process that will clean up after itself if the parent goes away and can
  * perform a handshake with the parent and ask it to relaunch.
  */
-class ChildProcess extends Process {
+export class ChildProcess extends Process {
   public logger = logger.named(`child:${process.pid}`)
 
   public constructor(private readonly parentPid: number) {