Update dependency string-replace-loader to v3

Author: renovate-bot

extension/package.json

@@ -89,7 +89,7 @@
         "rimraf": "3.0.2",
         "sass-loader": "10.1.1",
         "sinon": "9.2.4",
-        "string-replace-loader": "2.3.0",
+        "string-replace-loader": "3.0.1",
         "style-loader": "2.0.0",
         "terser-webpack-plugin": "4.2.3",
         "ts-jest": "26.4.4",