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>

test/unit/node/wrapper.test.ts

@@ -0,0 +1,14 @@
+import { ChildProcess, ParentProcess, isChild } from "../../../src/node/wrapper"
+
+describe("wrapper", () => {
+  describe("isChild", () => {
+    it("should return false for parent process", () => {
+      const p = new ParentProcess("1")
+      expect(isChild(p)).toBe(false)
+    })
+  })
+  it("should return false for parent process", () => {
+    const childProc = new ChildProcess(1)
+    expect(isChild(childProc)).toBe(true)
+  })
+})