fix(deps): update dependency knex to v0.16.2 (#1044)

Author: renovate[bot]

appengine/cloudsql/package.json

@@ -22,7 +22,7 @@
   },
   "dependencies": {
     "express": "4.16.4",
-    "knex": "0.15.2",
+    "knex": "0.16.2",
     "mysql": "2.16.0",
     "prompt": "1.0.0"
   },

appengine/cloudsql_postgresql/package.json

@@ -22,7 +22,7 @@
   },
   "dependencies": {
     "express": "4.16.4",
-    "knex": "0.15.2",
+    "knex": "0.16.2",
     "pg": "7.7.1",
     "prompt": "1.0.0"
   },

cloud-sql/postgres/knex/package.json

@@ -23,7 +23,7 @@
   "dependencies": {
     "body-parser": "1.18.2",
     "express": "4.16.2",
-    "knex": "0.14.4",
+    "knex": "0.16.2",
     "prompt": "1.0.0",
     "pug": "2.0.0-rc.4",
     "@google-cloud/logging-winston": "^0.10.2",