Update to Spring Boot 2.2.0.M1

jgrandja · jgrandja · commit f977a2594de4 · 2019-04-11T10:00:57.000-04:00
Fixes gh-6770
diff --git a/gradle.properties b/gradle.properties
@@ -1,3 +1,3 @@
 gaeVersion=1.9.68
-springBootVersion=2.1.3.RELEASE
+springBootVersion=2.2.0.M1
 version=5.2.0.BUILD-SNAPSHOT
