Upgrade to SnakeYaml 1.31

Closes gh-32221

Author: bclozel

spring-boot-project/spring-boot-dependencies/build.gradle

@@ -1382,7 +1382,7 @@ bom {
 			]
 		}
 	}
-	library("SnakeYAML", "1.30") {
+	library("SnakeYAML", "1.31") {
 		group("org.yaml") {
 			modules = [
 				"snakeyaml"

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/env/OriginTrackedYamlLoader.java

@@ -75,7 +75,7 @@ private Yaml createYaml(LoaderOptions loaderOptions) {
 		BaseConstructor constructor = new OriginTrackingConstructor(loaderOptions);
 		Representer representer = new Representer();
 		DumperOptions dumperOptions = new DumperOptions();
-		LimitedResolver resolver = new LimitedResolver();
+		NoTimestampResolver resolver = new NoTimestampResolver();
 		return new Yaml(constructor, representer, dumperOptions, loaderOptions, resolver);
 	}
 
@@ -167,14 +167,14 @@ private static Node get(Node node) {
 	/**
 	 * {@link Resolver} that limits {@link Tag#TIMESTAMP} tags.
 	 */
-	private static class LimitedResolver extends Resolver {
+	private static class NoTimestampResolver extends Resolver {
 
 		@Override
-		public void addImplicitResolver(Tag tag, Pattern regexp, String first) {
+		public void addImplicitResolver(Tag tag, Pattern regexp, String first, int limit) {
 			if (tag == Tag.TIMESTAMP) {
 				return;
 			}
-			super.addImplicitResolver(tag, regexp, first);
+			super.addImplicitResolver(tag, regexp, first, limit);
 		}
 
 	}