fix(General): make auth header optional for forward auth endpoint

src/main/java/com/cleverthis/authservice/controller/AuthController.java

@@ -179,7 +179,8 @@ public class AuthController {
           RequestMethod.PUT, RequestMethod.DELETE,
           RequestMethod.PATCH})
     public Mono<ResponseEntity<?>> forwardAuth(
-          @RequestHeader(HttpHeaders.AUTHORIZATION) String authorizationHeader,
+          @RequestHeader(value = HttpHeaders.AUTHORIZATION, required = false)
+          String authorizationHeader,
           @RequestHeader(HEADER_X_FORWARDED_METHOD) String originalMethod,
           @RequestHeader(HEADER_X_FORWARDED_URI) String originalUriString
     ) {
@@ -199,6 +200,9 @@ public class AuthController {
         if (shouldPassThrough(targetServiceClientId, serviceRelativePath)) {
             return Mono.just(ResponseEntity.status(HttpStatus.NO_CONTENT).build());
         }
+        if (authorizationHeader == null) {
+            return Mono.just(ResponseEntity.status(HttpStatus.BAD_REQUEST).build());
+        }
         // no pass-through, check permission
         final var accessToken = extractBearerToken(authorizationHeader);
         if (accessToken == null) {