chore(blocks/fal): Use dict instead of Dict (Significant-Gravitas#8855)

Replace Dict with dict

### Changes 🏗️

Replace Dict with dict

### Checklist 📋

#### For code changes:
- [ ] I have clearly listed my changes in the PR description
- [ ] I have made a test plan
- [ ] I have tested my changes according to the test plan:
  <!-- Put your test plan here: -->
  - [ ] ...

<details>
  <summary>Example test plan</summary>
  
  - [ ] Create from scratch and execute an agent with at least 3 blocks
- [ ] Import an agent from file upload, and confirm it executes
correctly
  - [ ] Upload agent to marketplace
- [ ] Import an agent from marketplace and confirm it executes correctly
  - [ ] Edit an agent from monitor, and confirm it executes correctly
</details>

#### For configuration changes:
- [ ] `.env.example` is updated or already compatible with my changes
- [ ] `docker-compose.yml` is updated or already compatible with my
changes
- [ ] I have included a list of my configuration changes in the PR
description (under **Changes**)

<details>
  <summary>Examples of configuration changes</summary>

  - Changing ports
  - Adding new services that need to communicate with each other
  - Secrets or environment variable changes
  - New or infrastructure changes such as databases
</details>

autogpt_platform/autogpt_libs/autogpt_libs/rate_limit/limiter.py

@@ -16,7 +16,7 @@ def __init__(
     ):
         self.redis = Redis(
             host=redis_host,
-            port=redis_port,
+            port=int(redis_port),
             password=redis_password,
             decode_responses=True,
         )

autogpt_platform/backend/backend/blocks/fal/ai_video_generator.py

@@ -1,7 +1,7 @@
 import logging
 import time
 from enum import Enum
-from typing import Any, Dict
+from typing import Any
 
 import httpx
 
@@ -64,16 +64,16 @@ def __init__(self):
             },
         )
 
-    def _get_headers(self, api_key: str) -> Dict[str, str]:
+    def _get_headers(self, api_key: str) -> dict[str, str]:
         """Get headers for FAL API requests."""
         return {
             "Authorization": f"Key {api_key}",
             "Content-Type": "application/json",
         }
 
     def _submit_request(
-        self, url: str, headers: Dict[str, str], data: Dict[str, Any]
-    ) -> Dict[str, Any]:
+        self, url: str, headers: dict[str, str], data: dict[str, Any]
+    ) -> dict[str, Any]:
         """Submit a request to the FAL API."""
         try:
             response = httpx.post(url, headers=headers, json=data)
@@ -83,7 +83,7 @@ def _submit_request(
             logger.error(f"FAL API request failed: {str(e)}")
             raise RuntimeError(f"Failed to submit request: {str(e)}")
 
-    def _poll_status(self, status_url: str, headers: Dict[str, str]) -> Dict[str, Any]:
+    def _poll_status(self, status_url: str, headers: dict[str, str]) -> dict[str, Any]:
         """Poll the status endpoint until completion or failure."""
         try:
             response = httpx.get(status_url, headers=headers)