Fix Typescript Version

package.json

@@ -17,8 +17,8 @@
     "@angular/compiler": "~8.2.14",
     "@angular/core": "^8.2.14",
     "@angular/flex-layout": "^8.0.0-beta.27",
-    "@angular/forms": "^7.2.15",
-    "@angular/http": "^7.2.15",
+    "@angular/forms": "^7.2.16",
+    "@angular/http": "^7.2.16",
     "@angular/material": "^8.2.3",
     "@angular/platform-browser": "8.2.14",
     "@angular/platform-browser-dynamic": "^8.2.14",
@@ -41,10 +41,10 @@
     "zone.js": "^0.8.29"
   },
   "devDependencies": {
-    "@angular-devkit/build-angular": "^0.803.21",
-    "@angular/cli": "^8.3.21",
+    "@angular-devkit/build-angular": "^0.803.23",
+    "@angular/cli": "^8.3.23",
     "@angular/compiler-cli": "^8.2.14",
-    "@angular/language-service": "^7.2.15",
+    "@angular/language-service": "^7.2.16",
     "@types/jasmine": "^2.8.16",
     "@types/jasminewd2": "^2.0.8",
     "@types/node": "~8.9.4",
@@ -59,6 +59,6 @@
     "protractor": "^5.4.2",
     "ts-node": "~7.0.0",
     "tslint": "^5.20.1",
-    "typescript": "^3.7.4"
+    "typescript": "<3.6.0"
   }
 }