[CI] Auto commit changes from spotless

Author: elasticsearchmachine

x-pack/plugin/security/src/test/java/org/elasticsearch/xpack/security/authc/saml/SamlAuthenticatorTests.java

@@ -1356,8 +1356,8 @@ public void testFailureWhenIdPCredentialsAreNull() throws Exception {
                     "Null credentials",
                     authenticator.getClass().getName(),
                     Level.WARN,
-                    "Exception while attempting to validate SAML Signature. " +
-                        "The issuer included in the SAML message was [https://idp.saml.elastic.test/]"
+                    "Exception while attempting to validate SAML Signature. "
+                        + "The issuer included in the SAML message was [https://idp.saml.elastic.test/]"
                 )
             );