Merge branch 'beta-model-name' into 'main'

Updated model name

See merge request ghsc/users/pmpowers/nshm-alaska!3

model-info.json

 {
-  "name": "NSHM Alaska 2023 (alpha)",
+  "name": "NSHM Alaska 2023 (beta)",
   "site-class-vs30": {
     "AB": 1500,
     "B": 1080,