Upgrade camshaft 0.63.4

NEWS.md

@@ -11,7 +11,7 @@ Announcements:
 - Adding Authorization to Access-Control-Allow-Headers (https://github.com/CartoDB/CartoDB-SQL-API/issues/534)
 - Update deps:
   - windshaft@4.13.1: Upgrade tilelive-mapnik to version 0.6.18-cdb18
-  - camshaft@0.63.3: Improve error message for exceeded batch SQL API payload size: add suggestions about what the user can do about it.
+  - camshaft@0.63.4: Improve error message for exceeded batch SQL API payload size: add suggestions about what the user can do about it.
 - Update dev deps:
   - jshint@2.9.7
   - mocha@5.2.0

package.json

@@ -27,7 +27,7 @@
     "@carto/fqdn-sync": "0.2.2",
     "basic-auth": "2.0.0",
     "body-parser": "1.18.3",
-    "camshaft": "0.63.3",
+    "camshaft": "0.63.4",
     "cartodb-psql": "0.13.1",
     "cartodb-query-tables": "0.4.0",
     "cartodb-redis": "2.1.0",