chore: resolve lint errors

Author: json-derulo

.eslintrc.json

@@ -15,6 +15,8 @@
         "plugin:@angular-eslint/template/process-inline-templates"
       ],
       "rules": {
+        "@typescript-eslint/restrict-template-expressions": "off",
+        "@typescript-eslint/restrict-plus-operands": "off",
         "@angular-eslint/component-selector": [
           "error",
           {

src/main.ts

@@ -8,7 +8,7 @@ if (environment.production) {
   enableProdMode();
 }
 
-bootstrapApplication(AppComponent, appConfig).catch((err) => {
+bootstrapApplication(AppComponent, appConfig).catch((err: unknown) => {
   console.error(err);
 });