chore(deps): pin dependency html-webpack-plugin to 5.6.0

Renovate-Branch: renovate/pin-dependencies
Change-Id: I74aba858060938a76497ed4d4a7751969d755793
diff --git a/package.json b/package.json
index 84cec8e..9231d28 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
     "copy-webpack-plugin": "12.0.2",
     "css-loader": "7.1.2",
     "eslint": "9.11.1",
-    "html-webpack-plugin": "^5.6.0",
+    "html-webpack-plugin": "5.6.0",
     "jest": "29.7.0",
     "jest-environment-jsdom": "29.7.0",
     "json5": "2.2.3",