Update to OpenSaml 4.3.1

Closes gh-14850

Author: jzheaux

gradle/libs.versions.toml

@@ -12,7 +12,7 @@ org-eclipse-jetty = "11.0.20"
 org-jetbrains-kotlin = "1.9.23"
 org-jetbrains-kotlinx = "1.7.3"
 org-mockito = "5.5.0"
-org-opensaml = "4.3.0"
+org-opensaml = "4.3.1"
 org-springframework = "6.1.5"
 
 [libraries]