[PATCH] data: Add 310 030 MCC/MNC (HNI) as AT&T.

The 310 030 MCC/MNC (HNI) for the GSM 850 MHz band was acquired by
AT&T Mobility from Centennial Wireless; however, at the time of this
commit and as of "ITU Operational Bulletin No. 1280", published
2023-11-15, AT&T has formally withdrawn this MNC and the status of
this MNC is non-operational.

Nonetheless, "AT&T Business" SIMs issued have SIM IMSIs prefixed with
310 030.

By including this MCC/MNC (HNI) in the provisioning database for AT&T,
it allows such SIMs to successfully auto-provision.
---
 data/provision.json | 1 +
 1 file changed, 1 insertion(+)

diff --git a/data/provision.json b/data/provision.json
index 50319cf33a51..f10b9b70ddfb 100644
--- a/data/provision.json
+++ b/data/provision.json
@@ -14141,6 +14141,7 @@
     "name": "AT&T",
     "ids": [
       "310016",
+      "310030",
       "310038",
       "310070",
       "310080",
-- 
2.45.0