Update to Yarn 3 (#13140)

scripts/integration-tests/e2e-babel.sh

@@ -26,6 +26,7 @@ if [ "$BABEL_8_BREAKING" = true ] ; then
 fi
 
 startLocalRegistry "$PWD"/scripts/integration-tests/verdaccio-config.yml
+
 # We only bump dependencies in the top-level package.json, because workspaces
 # already use the workspace: protocol so will get the version in the monorepo
 # and not from npm.
@@ -36,11 +37,11 @@ if [ "$BABEL_8_BREAKING" = true ] ; then
   # Jest hangs forever in the Babel 8 e2e test when using multiple workers,
   # but we don't know yet why. Until we figure it out (see
   # https://github.com/babel/babel/pull/13618) we can use --runInBand.
-  make -j build-standalone-ci
+  YARN_ENABLE_IMMUTABLE_INSTALLS=false make -j build-standalone-ci
   BABEL_ENV=test yarn jest --ci --runInBand
   make -j test-clean
 else
-  make -j test-ci
+  YARN_ENABLE_IMMUTABLE_INSTALLS=false make -j test-ci
 fi
 
 cleanup