Fix upgrade detection when number of numeric components changes

Fixes gh-41471

Author: wilkinsona

buildSrc/src/main/java/org/springframework/boot/build/bom/bomr/version/ArtifactVersionDependencyVersion.java

@@ -81,6 +81,9 @@ private boolean isSameMinor(ArtifactVersionDependencyVersion other) {
 
 	@Override
 	public boolean isUpgrade(DependencyVersion candidate, boolean movingToSnapshots) {
+		if (candidate instanceof MultipleComponentsDependencyVersion) {
+			return super.isUpgrade(candidate, movingToSnapshots);
+		}
 		if (!(candidate instanceof ArtifactVersionDependencyVersion)) {
 			return false;
 		}