Update .gitignore

[ntindle]

Background

Gitignore updates missed a setting for the workspaces folder

Changes

Fixes the Ignore for the workspace

Documentation

N/A

Test Plan

Tested locally

PR Quality Checklist

• My pull request is atomic and focuses on a single change.
• I have thoroughly tested my changes with multiple different prompts.
• I have considered potential risks and mitigations for my changes.
• I have documented my changes clearly and comprehensively.
• I have not snuck in any "extra" small tweaks changes.
• I have run the following commands against my code to ensure it passes our linters:

  black .
  isort .
  mypy
  autoflake --remove-all-unused-imports --recursive --ignore-init-module-imports autogpt tests --in-place

[vercel]

Deployment failed with the following error:

Resource is limited - try again in 8 hours (more than 100, code: "api-deployments-free-per-day").

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (c9f1f05) 69.70% compared to head (e7f494a) 69.70%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4610   +/-   ##
=======================================
  Coverage   69.70%   69.70%           
=======================================
  Files          72       72           
  Lines        3562     3562           
  Branches      569      569           
=======================================
  Hits         2483     2483           
  Misses        890      890           
  Partials      189      189           

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[Pwuts]

For the record:
Instead of merging this I'd rather address the problem of the workspace folder wandering around. It's not supposed to be in autogpt/. That is the folder containing the program source and nothing else. It's not the first time that the workspace folder accidentally moved in there either; this has happened multiple times, usually caused by a relative reference to the workspace path being moved to a file that is one level deeper in autogpt/.