Refactor job.summary.ts to include Copilot seat assignments and update CI workflow

Author: austenstone

.github/workflows/email.yml

@@ -6,6 +6,7 @@ on:
 
 jobs:
   run:
+    name: Copilot Usage
     runs-on: ubuntu-latest
     steps:
       - uses: austenstone/copilot-usage@main

.github/workflows/usage.yml

@@ -6,6 +6,7 @@ on:
 
 jobs:
   run:
+    name: Copilot Usage
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4

src/run.ts

@@ -1,4 +1,4 @@
-import { getBooleanInput, getInput, info, setOutput, summary } from "@actions/core";
+import { getBooleanInput, getInput, info, setOutput } from "@actions/core";
 import { getOctokit } from "@actions/github";
 import { CopilotUsageResponse } from "./types";
 import { DefaultArtifactClient } from "@actions/artifact";