chore: Add cache control header for static files (#35461)

## Description
Add cache control header to static files in Caddy

Fixes #34643 

## Automation

/ok-to-test tags="@tag.All"

### 🔍 Cypress test results
<!-- This is an auto-generated comment: Cypress test results  -->
> [!TIP]
> 🟢 🟢 🟢 All cypress tests have passed! 🎉 🎉 🎉
> Workflow run:
<https://github.com/appsmithorg/appsmith/actions/runs/10987267745>
> Commit: 779d12e
> <a
href="https://internal.appsmith.com/app/cypress-dashboard/rundetails-65890b3c81d7400d08fa9ee5?branch=master&workflowId=10987267745&attempt=1"
target="_blank">Cypress dashboard</a>.
> Tags: `@tag.All`
> Spec:
> <hr>Mon, 23 Sep 2024 04:38:28 UTC
<!-- end of auto-generated comment: Cypress test results  -->


## Communication
Should the DevRel and Marketing teams inform users about this change?
- [ ] Yes
- [ ] No


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit


## Summary by CodeRabbit

- **New Features**
- Enhanced caching strategy for static assets, improving performance and
reducing load times.
- Introduced a `Cache-Control` header for static files to optimize
browser caching.
- Updated caching configuration to allow more frequent updates of
JavaScript and CSS files.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

deploy/docker/fs/opt/appsmith/caddy-reconfigure.mjs

@@ -92,6 +92,10 @@ parts.push(`
     X-Appsmith-Request-Id {http.request.uuid}
   }
 
+  header /static/* {
+    Cache-Control "public, max-age=31536000, immutable"
+  }
+
   request_body {
     max_size ${process.env.APPSMITH_CODEC_SIZE || 150}MB
   }