chore(deps): update dependency webpack-merge to v6 (#1824)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

packages/custom-webpack/package.json

@@ -45,7 +45,7 @@
     "@angular-devkit/build-angular": "^18.0.0",
     "@angular-devkit/core": "^18.0.0",
     "lodash": "^4.17.15",
-    "webpack-merge": "^5.7.3"
+    "webpack-merge": "^6.0.0"
   },
   "peerDependencies": {
     "@angular/compiler-cli": "^18.0.0"

yarn.lock

@@ -75,7 +75,7 @@ __metadata:
     rimraf: ^5.0.0
     ts-node: ^10.0.0
     typescript: 5.4.5
-    webpack-merge: ^5.7.3
+    webpack-merge: ^6.0.0
   peerDependencies:
     "@angular/compiler-cli": ^18.0.0
   languageName: unknown
@@ -16225,7 +16225,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"webpack-merge@npm:5.10.0, webpack-merge@npm:^5.7.3":
+"webpack-merge@npm:5.10.0":
   version: 5.10.0
   resolution: "webpack-merge@npm:5.10.0"
   dependencies:
@@ -16236,6 +16236,17 @@ __metadata:
   languageName: node
   linkType: hard
 
+"webpack-merge@npm:^6.0.0":
+  version: 6.0.1
+  resolution: "webpack-merge@npm:6.0.1"
+  dependencies:
+    clone-deep: ^4.0.1
+    flat: ^5.0.2
+    wildcard: ^2.0.1
+  checksum: e8a604c686b944605a1c57cc7b75e886ab902dc5ffdd15259a092c5c2dd5f58868fe39f995ea4bad4f189e38843b061c4ae1eb22822d7169813f4adab571dc3d
+  languageName: node
+  linkType: hard
+
 "webpack-sources@npm:^3.0.0, webpack-sources@npm:^3.2.3":
   version: 3.2.3
   resolution: "webpack-sources@npm:3.2.3"
@@ -16405,7 +16416,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"wildcard@npm:^2.0.0":
+"wildcard@npm:^2.0.0, wildcard@npm:^2.0.1":
   version: 2.0.1
   resolution: "wildcard@npm:2.0.1"
   checksum: e0c60a12a219e4b12065d1199802d81c27b841ed6ad6d9d28240980c73ceec6f856771d575af367cbec2982d9ae7838759168b551776577f155044f5a5ba843c