chore: add webpack v5 support

Author: deleonio

node_modules/__this-loader/index.js

@@ -21,10 +21,10 @@
   "devDependencies": {
     "chai": "^4.1.2",
     "mocha": "^5.0.1",
-    "webpack": "^4.34.0"
+    "webpack": "^5.3.0"
   },
   "peerDependencies": {
-    "webpack": "1 || 2 || 3 || 4"
+    "webpack": "1 || 2 || 3 || 4 || 5"
   },
   "repository": {
     "type": "git",