chore: ping prettier dependency version

Author: AllanZhengYP

packages/package-generator/package.json

@@ -32,7 +32,7 @@
     "semver": "^5.4.1",
     "tslib": "^1.8.0",
     "yargs": "^8.0.2",
-    "prettier": "^1.17.0"
+    "prettier": "1.17.0"
   },
   "devDependencies": {
     "@types/glob": "^5.0.35",
@@ -41,7 +41,7 @@
     "@types/rimraf": "^2.0.2",
     "@types/semver": "^5.4.0",
     "@types/yargs": "^8.0",
-    "@types/prettier": "^1.16.3",
+    "@types/prettier": "1.16.3",
     "jest": "^20.0.4",
     "typescript": "^3.0.0"
   }

packages/service-types-generator/package.json

@@ -14,7 +14,6 @@
     "@types/node": "^8.10.29",
     "@types/prettier": "1.16.3",
     "jest": "^20.0.4",
-    "prettier": "^1.17.0",
     "typescript": "^3.0.0"
   },
   "scripts": {