Get patch versions of Flow (#6716)

Best practice or whatever.
(cherry picked from commit 700b7148ef)

.flowconfig

@@ -31,4 +31,4 @@ suppress_comment=\\(.\\|\n\\)*\\$FlowIssue\\((\\(>=0\\.\\(2[0-4]\\|1[0-9]\\|[0-9
 suppress_comment=\\(.\\|\n\\)*\\$FlowFixedInNextDeploy
 
 [version]
-0.24.0
+^0.24.0

package.json

@@ -41,7 +41,7 @@
     "eslint-plugin-react-internal": "file:eslint-rules",
     "fbjs": "^0.8.1",
     "fbjs-scripts": "^0.6.0",
-    "flow-bin": "0.24.0",
+    "flow-bin": "^0.24.0",
     "glob": "^6.0.1",
     "grunt": "^0.4.5",
     "grunt-cli": "^0.1.13",