Update to Google App Engine 1.9.93

Closes gh-10644

Author: eleftherias

gradle.properties

@@ -1,5 +1,5 @@
 aspectjVersion=1.9.6
-gaeVersion=1.9.88
+gaeVersion=1.9.93
 springBootVersion=2.2.13.RELEASE
 version=5.3.13.BUILD-SNAPSHOT
 org.gradle.jvmargs=-Xmx3g -XX:MaxPermSize=2048m -XX:+HeapDumpOnOutOfMemoryError

gradle/dependency-management.gradle

@@ -30,7 +30,7 @@ dependencies {
 		management "com.fasterxml.jackson.core:jackson-databind:2.10.+"
 		management 'com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.10.+'
 		management "com.google.appengine:appengine-api-1.0-sdk:$gaeVersion"
-		management "com.google.appengine:appengine-api-labs:$gaeVersion"
+		management "com.google.appengine:appengine-api-labs:1.9.88"
 		management "com.google.appengine:appengine-api-stubs:$gaeVersion"
 		management "com.google.appengine:appengine-testing:$gaeVersion"
 		management "com.google.appengine:appengine:$gaeVersion"

samples/xml/gae/spring-security-samples-xml-gae.gradle

@@ -38,7 +38,7 @@ dependencies {
 
 	testCompile "com.google.appengine:appengine-testing:$gaeVersion"
 
-	testRuntime "com.google.appengine:appengine-api-labs:$gaeVersion"
+	testRuntime "com.google.appengine:appengine-api-labs:1.9.88"
 }
 
 appengineRun.onlyIf { !gradle.taskGraph.hasTask(appengineFunctionalTest) }