Update to GAE 1.9.93

Closes gh-10628

gradle.properties

@@ -1,5 +1,5 @@
 aspectjVersion=1.9.7
-gaeVersion=1.9.88
+gaeVersion=1.9.93
 springBootVersion=2.2.13.RELEASE
 version=5.2.14.BUILD-SNAPSHOT
 org.gradle.jvmargs=-Xmx3g -XX:MaxPermSize=2048m -XX:+HeapDumpOnOutOfMemoryError

gradle/dependency-management.gradle

@@ -48,7 +48,7 @@ dependencyManagement {
 		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:$gaeVersion'
-		dependency 'com.google.appengine:appengine-api-labs:$gaeVersion'
+		dependency 'com.google.appengine:appengine-api-labs:1.9.88'
 		dependency 'com.google.appengine:appengine-api-stubs:$gaeVersion'
 		dependency 'com.google.appengine:appengine-testing:$gaeVersion'
 		dependency '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) }