Upgrade to SnakeYAML 1.28

wilkinsona · wilkinsona · commit 66a2603f1098 · 2021-03-16T13:54:31.000Z
Closes gh-25683
diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -1575,7 +1575,7 @@ bom {
 			]
 		}
 	}
-	library("SnakeYAML", "1.27") {
+	library("SnakeYAML", "1.28") {
 		group("org.yaml") {
 			modules = [
 				"snakeyaml"
