CI: Busting binary cache

We kept getting,

```
Error: Unable to reserve cache with key
build-darwin-arm64-ed94a82639847ed06afe84af9fb368d5dae34dfd4556ef0c864fc11b0b9f3b58,
another job may be creating this cache.
```

As suggested here: oven-sh/setup-bun#45 (comment)

```
@xHyroM Does this comment help you with further investigation →
shivammathur/cache-extensions#22 (comment) ? That one also mentions
this one from actions/cache: actions/cache#485 (comment)
```

.github/workflows/deploy.yml

@@ -23,7 +23,7 @@ jobs:
       - uses: esy/github-action@6a5070d392db3e8c776724674737cab37c07263d
         with:
           source-cache-key: 20240511-1
-          cache-key: ${{ hashFiles('esy.lock/index.json') }}
+          cache-key: ${{ hashFiles('esy.lock/index.json') }}-20240511-1
       - name: Export esy cache
         run: esy export-dependencies
       - uses: actions/upload-artifact@v4.3.1