Add security config for the new '/about' endpoint

Author: sjoubert

src/main/kotlin/com/cosmotech/api/security/AbstractSecurityConfiguration.kt

@@ -162,6 +162,15 @@ internal fun endpointSecurityReaders(
     customOrganizationViewer: String
 ) =
     listOf(
+        CsmSecurityEndpointsRolesReader(
+            paths = listOf("/about"),
+            roles =
+                arrayOf(
+                    ROLE_ORGANIZATION_USER,
+                    ROLE_ORGANIZATION_VIEWER,
+                    customOrganizationUser,
+                    customOrganizationViewer),
+            customAdmin = customOrganizationAdmin),
         CsmSecurityEndpointsRolesReader(
             paths = PATHS_CONNECTORS,
             roles =