or maintained. Upgrade Angular to v12+ to remove this dependency.
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I have tried updating the npm version, but the problem persists. I also attempted to use force resolution, but without success. Below is my package.json file:

{
  "name": "demo-app",
  "version": "1.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build --prod",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e",
    "preinstall": "npx npm-force-resolutions"
  },
  "private": false,
  "dependencies": {
    "@angular/animations": "6.1.10",
    "@angular/common": "6.1.10",
    "@angular/compiler": "6.1.10",
    "@angular/core": "6.1.10",
    "@angular/forms": "6.1.10",
    "@angular/http": "6.1.10",
    "@angular/platform-browser": "6.1.10",
    "@angular/platform-browser-dynamic": "6.1.10",
    "@angular/router": "6.1.10",
    "@ngrx/effects": "^6.1.0",
    "@ngrx/store": "^6.1.0",
    "@ngrx/store-devtools": "^6.1.0",
    "classlist.js": "^1.1.20150312",
    "core-js": "^3.26.1",
    "moment-mini": "^2.22.1",
    "ng2-date-picker": "^2.10.0",
    "ng2-file-upload": "^1.3.0",
    "ngx-pagination": "^3.1.1",
    "ngx-quill": "^3.1.0",
    "ngx-scrollbar": "2.1.0",
    "npm": "^6.1.0",
    "rxjs": "^6.3.3",
    "rxjs-compat": "^6.3.3",
    "zone.js": "^0.8.26"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.6.8",
    "@angular/cli": "^6.0.8",
    "@angular/compiler-cli": "6.1.10",
    "@angular/language-service": "6.1.10",
    "@babel/runtime": "^7.12.1",
    "@babel/plugin-transform-runtime": "^7.12.1",
    "babel-plugin-istanbul": "^6.0.0",
    "@ngrx/schematics": "^6.1.0",
    "@types/jasmine": "~2.8.8",
    "@types/jasminewd2": "~2.0.3",
    "@types/node": "~8.9.4",
    "codelyzer": "~4.2.1",
    "jasmine-core": "~2.99.1",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "^6.4.1",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "^1.2.1",
    "karma-jasmine": "~1.1.2",
    "karma-jasmine-html-reporter": "^0.2.2",
    "npm-force-resolutions": "^0.0.10",
    "protractor": "~5.3.0",
    "ts-node": "~5.0.1",
    "tslint": "~5.9.1",
    "typescript": "~2.7.2"
  },
  "resolutions": {
    "core-js": "3.26.1",
    "babel-runtime/core-js": "3.26.1",
    "@babel/runtime/core-js": "3.26.1",
    "istanbul-lib-instrument/core-js": "3.26.1",
    "babel-generator/core-js": "3.26.1",
    "babel-runtime": "7.12.1"
  }
}