ng test - SyntaxError: Unexpected token '.'

Recently, I upgraded my angular project from v14 to v15. But after the upgrade, on running the test suite using the command ng test, I'm getting the following error:

I addressed the warning shown in the above screenshot but unfortunately, the issue didn't get resolved. Please help me in any way possible and let me know in case more details are needed.

For reference,

package.json

"dependencies": {
    "@angular/animations": "^15.2.10",
    "@angular/cdk": "^15.2.9",
    "@angular/common": "^15.2.10",
    "@angular/compiler": "^15.2.10",
    "@angular/core": "^15.2.10",
    "@angular/forms": "^15.2.10",
    "@angular/material": "^15.2.9",
    "@angular/platform-browser": "^15.2.10",
    "@angular/platform-browser-dynamic": "^15.2.10",
    "@angular/router": "^15.2.10",
    "@fortawesome/angular-fontawesome": "^0.5.0",
    "@fortawesome/fontawesome-free": "^5.15.4",
    "@fortawesome/fontawesome-svg-core": "^1.2.36",
    "@fortawesome/free-solid-svg-icons": "^5.15.4",
    "auth0-js": "^9.24.1",
    "bootstrap": "^5.3.3",
    "font-awesome": "^4.7.0",
    "jquery": "^3.7.1",
    "jwt-decode": "^2.2.0",
    "lodash": "^4.17.21",
    "material-icons": "^1.13.12",
    "ngx-mat-multi-sort": "^0.7.4",
    "ngx-mat-select-search": "^3.3.3",
    "ngx-toastr": "^16.2.0",
    "rxjs": "~6.6.0",
    "tslib": "^2.6.2",
    "uuid": "^9.0.1",
    "zone.js": "^0.11.8"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "^15.2.11",
    "@angular-eslint/builder": "13.5.0",
    "@angular-eslint/eslint-plugin": "13.5.0",
    "@angular-eslint/eslint-plugin-template": "13.5.0",
    "@angular-eslint/schematics": "13.5.0",
    "@angular-eslint/template-parser": "13.5.0",
    "@angular/cli": "^15.2.11",
    "@angular/compiler-cli": "^15.2.10",
    "@angular/language-service": "^15.2.10",
    "@types/auth0-js": "^9.21.5",
    "@types/jasmine": "~3.8.0",
    "@types/lodash": "^4.17.0",
    "@types/node": "^12.20.55",
    "@typescript-eslint/eslint-plugin": "4.28.2",
    "@typescript-eslint/parser": "4.28.2",
    "eslint": "^7.26.0",
    "jasmine-core": "~3.6.0",
    "jasmine-spec-reporter": "~5.0.0",
    "karma": "^6.4.3",
    "karma-chrome-launcher": "^3.2.0",
    "karma-coverage-istanbul-reporter": "~3.0.2",
    "karma-jasmine": "^4.0.2",
    "karma-jasmine-html-reporter": "^1.5.0",
    "karma-junit-reporter": "^1.2.0",
    "karma-spec-reporter": "0.0.32",
    "ng-packagr": "^15.2.2",
    "protractor": "~7.0.0",
    "puppeteer": "^1.20.0",
    "ts-node": "~7.0.0",
    "typescript": "^4.8.4"
  },
  "resolutions": {
    "glob-parent": "^5.1.2",
    "set-value": "^4.0.1",
    "ansi-regex": "^5.0.1"
  }

karma.conf.js

// Karma configuration file, see link for more information
// https://karma-runner.github.io/1.0/config/configuration-file.html

process.env.CHROME_BIN = require('puppeteer').executablePath();

module.exports = function(config) {
    config.set({
        basePath: '',
        frameworks: ['jasmine', '@angular-devkit/build-angular'],
        plugins: [
            require('karma-jasmine'),
            require('karma-chrome-launcher'),
            require('karma-jasmine-html-reporter'),
            require('karma-coverage-istanbul-reporter'),
            require('karma-spec-reporter'),
            require('karma-junit-reporter'),
            require('@angular-devkit/build-angular/plugins/karma')
        ],
        client: {
            clearContext: false // leave Jasmine Spec Runner output visible in browser
        },
        coverageIstanbulReporter: {
            dir: require('path').join(__dirname, './coverage'),
            reports: ['text-summary', 'cobertura'],
            fixWebpackSourcePaths: true,
            combineBrowserReports: true,
            'report-config': {
                cobertura: {
                    // the default, but better to be explicit
                    file: 'cobertura-coverage.xml'
                }
            },
        },
        files: [
            'node_modules/jquery/dist/jquery.min.js'
        ],
        junitReporter: {
            outputDir: './reports',
            outputFile: 'junit.xml',
            useBrowserName: false
            // nameFormatter: undefined, // function (browser, result) to customize the name attribute in xml testcase element
            // classNameFormatter: undefined, // function (browser, result) to customize the classname attribute in xml testcase element
            // properties: {}, // key value pair of properties to add to the <properties> section of the report
            /// xmlVersion: null // use '1' if reporting to be per SonarQube 6.2 XML format
        },
        reporters: ['progress', 'kjhtml', 'spec', 'coverage-istanbul', 'junit'],
        port: 9876,
        colors: true,
        logLevel: config.LOG_INFO,
        autoWatch: true,
        browsers: ['ChromeHeadlessNoSandbox'],
        customLaunchers: {
            ChromeHeadlessNoSandbox: {
                base: 'ChromeHeadless',
                flags: ['--no-sandbox']
            }
        },
        singleRun: false,
        restartOnFileChange: true
    });
};