Update to Spring Security 6.3.7

Closes gh-1910

Author: sjohnr

gradle/libs.versions.toml

@@ -1,6 +1,6 @@
 [versions]
 org-springframework = "6.1.17"
-org-springframework-security = "6.3.6"
+org-springframework-security = "6.3.7"
 com-fasterxml-jackson = "2.17.3"
 nimbus-jose-jwt = "9.39.3"
 org-bouncycastle = "1.78.1"