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/file-changes-action/jest.config.integration.js

@@ -0,0 +1,5 @@
+var config = require('./jest.config')
+config.testPathIgnorePatterns = ['!/src/tests/integration.test.ts']
+config.testMatch = ['**/integration.test.ts']
+console.log('RUNNING INTEGRATION TESTS')
+module.exports = config