fix(backend): Change node output logging type from info to debug (#9831)

<!-- Clearly explain the need for these changes: -->

### Changes 🏗️
This PR simply changes the logging type from info to debug of node
outputs in the agent.py file.
<!-- Concisely describe all of the changes made in this pull request:
-->

### Checklist 📋

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

<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:
- [x] `.env.example` is updated or already compatible with my changes
- [x] `docker-compose.yml` is updated or already compatible with my
changes
- [x] 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>

---------

Co-authored-by: Bentlybro <Github@bentlybro.com>

autogpt_platform/backend/backend/blocks/agent.py

@@ -88,7 +88,7 @@ class AgentExecutorBlock(Block):
                 else:
                     continue
 
-            logger.info(
+            logger.debug(
                 f"Execution {log_id} produced input {event.input_data} output {event.output_data}"
             )
 
@@ -106,5 +106,7 @@ class AgentExecutorBlock(Block):
                 continue
 
             for output_data in event.output_data.get("output", []):
-                logger.info(f"Execution {log_id} produced {output_name}: {output_data}")
+                logger.debug(
+                    f"Execution {log_id} produced {output_name}: {output_data}"
+                )
                 yield output_name, output_data