hotfix(backend): Increase statement timeout for the double brace migration (#9244)

### Changes 🏗️


https://github.com/Significant-Gravitas/AutoGPT/actions/runs/12696734339/job/35391431786

### 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:
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- [ ] 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/backend/migrations/20250105254106_migrate_brace_to_double_brace_string_format/migration.sql

@@ -7,6 +7,8 @@
         - AIStructuredResponseGeneratorBlock
     with a double brace format.
 */
+SET statement_timeout = '15min';
+
 WITH to_update AS (
     SELECT
         "agentBlockId",