Update OpenAPI Description (#42538)

Co-authored-by: Jess Hosman <1183847+jhosman@users.noreply.github.com>

src/github-apps/data/fpt-2022-11-28/fine-grained-pat.json

@@ -1217,6 +1217,14 @@
       "requestPath": "/repos/{owner}/{repo}/commits/{ref}/check-suites"
     }
   ],
+  "classroom": [
+    {
+      "slug": "get-assignment-grades",
+      "subcategory": "classroom",
+      "verb": "get",
+      "requestPath": "/assignments/{assignment_id}/grades"
+    }
+  ],
   "code-scanning": [
     {
       "slug": "list-code-scanning-alerts-for-an-organization",

src/github-apps/data/fpt-2022-11-28/user-to-server-rest.json

@@ -1235,6 +1235,14 @@
       "requestPath": "/repos/{owner}/{repo}/commits/{ref}/check-suites"
     }
   ],
+  "classroom": [
+    {
+      "slug": "get-assignment-grades",
+      "subcategory": "classroom",
+      "verb": "get",
+      "requestPath": "/assignments/{assignment_id}/grades"
+    }
+  ],
   "code-scanning": [
     {
       "slug": "list-code-scanning-alerts-for-an-organization",

src/github-apps/data/ghec-2022-11-28/fine-grained-pat.json

@@ -1333,6 +1333,14 @@
       "requestPath": "/repos/{owner}/{repo}/commits/{ref}/check-suites"
     }
   ],
+  "classroom": [
+    {
+      "slug": "get-assignment-grades",
+      "subcategory": "classroom",
+      "verb": "get",
+      "requestPath": "/assignments/{assignment_id}/grades"
+    }
+  ],
   "code-scanning": [
     {
       "slug": "list-code-scanning-alerts-for-an-organization",

src/github-apps/data/ghec-2022-11-28/user-to-server-rest.json

@@ -1351,6 +1351,14 @@
       "requestPath": "/repos/{owner}/{repo}/commits/{ref}/check-suites"
     }
   ],
+  "classroom": [
+    {
+      "slug": "get-assignment-grades",
+      "subcategory": "classroom",
+      "verb": "get",
+      "requestPath": "/assignments/{assignment_id}/grades"
+    }
+  ],
   "code-scanning": [
     {
       "slug": "list-code-scanning-alerts-for-an-organization",