build: inline external Github Actions to unblock CI (#12241)

* build: inline cached-dependencies to unblock CI

* Run E2E on pull_request on;y

* Inline all external actions

* Checkout needed for internal actions

Also fixes pre-commit

* Add missing files

.github/actions/cached-dependencies/__tests__/fixtures/bashlib.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+default-setup-command() {
+  print-cachescript-path
+}