Update dependency lerna to v4 (#4586)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

package.json

@@ -130,7 +130,7 @@
     "karma-summary-reporter": "2.0.0",
     "karma-webpack": "4.0.2",
     "lcov-result-merger": "3.1.0",
-    "lerna": "3.22.1",
+    "lerna": "4.0.0",
     "listr": "0.14.3",
     "lodash": "4.17.20",
     "long": "3.2.0",

packages-exp/auth-compat-exp/demo/package.json

@@ -21,7 +21,7 @@
   "dependencies": {
     "@firebase/logger": "^0.2.2",
     "@firebase/util": "^1.0.0",
-    "lerna": "^3.22.1",
+    "lerna": "^4.0.0",
     "tslib": "2.3.0"
   },
   "license": "Apache-2.0",