openid-connect: fix use_jwks breaking authentication header

I you use jwks instead of explicitly setting the public key, requests with a proper `Authorization: Bearer` header would still get the `302 Found` response. Fix by adding `conf.use_jwks` to the check.

apisix/plugins/openid-connect.lua

@@ -451,7 +451,7 @@ function _M.rewrite(plugin_conf, ctx)
 
     local response, err, session, _
 
-    if conf.bearer_only or conf.introspection_endpoint or conf.public_key then
+if conf.bearer_only or conf.introspection_endpoint or conf.public_key or conf.use_jwks then
         -- An introspection endpoint or a public key has been configured. Try to
         -- validate the access token from the request, if it is present in a
         -- request header. Otherwise, return a nil response. See below for