Update to GAE 1.9.62

Fixes: gh-5053

gradle.properties

@@ -1,3 +1,3 @@
-gaeVersion=1.9.60
+gaeVersion=1.9.62
 springBootVersion=2.0.0.RC2
 version=5.0.3.BUILD-SNAPSHOT

gradle/dependency-management.gradle

@@ -33,11 +33,11 @@ dependencyManagement {
 		dependency 'com.fasterxml.jackson.core:jackson-databind:2.9.4'
 		dependency 'com.fasterxml:classmate:1.3.4'
 		dependency 'com.github.stephenc.jcip:jcip-annotations:1.0-1'
-		dependency 'com.google.appengine:appengine-api-1.0-sdk:1.9.60'
-		dependency 'com.google.appengine:appengine-api-labs:1.9.60'
-		dependency 'com.google.appengine:appengine-api-stubs:1.9.60'
-		dependency 'com.google.appengine:appengine-testing:1.9.60'
-		dependency 'com.google.appengine:appengine:1.9.60'
+		dependency 'com.google.appengine:appengine-api-1.0-sdk:1.9.62'
+		dependency 'com.google.appengine:appengine-api-labs:1.9.62'
+		dependency 'com.google.appengine:appengine-api-stubs:1.9.62'
+		dependency 'com.google.appengine:appengine-testing:1.9.62'
+		dependency 'com.google.appengine:appengine:1.9.62'
 		dependency 'com.google.code.gson:gson:2.8.2'
 		dependency 'com.google.guava:guava:20.0'
 		dependency 'com.google.inject:guice:3.0'