update to v28.2.0 (#594)

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Reviewed-on: https://gitea.com/gitea/docs/pulls/594
Reviewed-by: silverwind <[email protected]>

static/openapi3-28.json

@@ -11119,7 +11119,7 @@
       "url": "http://opensource.org/licenses/MIT"
     },
     "title": "Gitea API",
-    "version": "28.1.0"
+    "version": "28.2.0"
   },
   "openapi": "3.0.3",
   "paths": {
@@ -37709,4 +37709,4 @@
       "name": "user"
     }
   ]
-}
+}