update angular dependencies

client/angular/package.json

@@ -29,7 +29,7 @@
         "textangular": "1.5.16"
     },
     "devDependencies": {
-        "@types/angular": "^1.6.57",
+        "@types/angular": "^1.8.1",
         "@types/angular-mocks": "1.5.11",
         "@types/angular-translate": "2.15.2",
         "@types/angular-ui-router": "1.1.40",
@@ -59,7 +59,7 @@
         "karma-webpack": "3.0.5",
         "moment": "2.21.0",
         "ngtemplate-loader": "2.0.1",
-        "node-sass": ">=4.13.1",
+        "node-sass": "^6.0.0",
         "phantomjs": "2.1.7",
         "phantomjs-prebuilt": "2.1.16",
         "postcss-loader": "2.1.1",
@@ -75,7 +75,7 @@
         "typescript": "2.7.2",
         "uglifyjs-webpack-plugin": "1.2.3",
         "url-loader": "1.0.1",
-        "webpack": "^4.41.2",
+        "webpack": "^4.46.0",
         "webpack-cli": "^3.3.10",
         "webpack-dev-server": "3.1.14",
         "webpack-merge": "4.1.2",