Clean up & fix GitHub workflows (#6313)

* ci: Mitigate security issues in autogpt-ci.yml

- Remove unnecessary pull_request_target paths and related variables and config
- Set permissions for contents to read only

* ci: Simplify steps in autogpt-ci.yml workflow using GitHub CLI

- Simplify step in 'autogpt-ci.yml' by using GitHub CLI instead of API for adding label and comment functionality
- Replace curl command with 'gh issue edit' to add "behaviour change" label to the pull request
- Replace gh api command with 'gh issue comment' to leave a comment about the changed behavior of AutoGPT in the pull request

* ci: Fix issues in workflows

- Move environment variable definition to top level in benchmark-ci.yml (because the other job also needs it)
- Removed invalid 'branches: [hackathon]' restriction in hackathon.yml workflow
- Removed redundant 'ref' and 'repository' fields in the 'checkout' step of both workflows.

* ci: Delete legacy benchmarks.yml workflow

* ci: Add triggers for CI workflows

- Add triggers to run CI workflows when they are edited.
- Update the paths for the CI workflows in the trigger configuration.

* fix: Fix benchmark lint error

- Removed unnecessary blank lines in report_types.py
- Fixed string quotes in challenge.py to maintain consistency

* fix: Update task description in password generator data.json

- Update task description in `data.json` file for the password generator challenge to clarify the input requirements and error handling.
- This change is made in an attempt to make the Benchmark CI pass.

* fix: Fix PasswordGenerator challenge in CI

- Fix the behavior of the reference password_generator.py to align with the task description
- Use default password length 8 instead of a random length in the generate_password function
- Retrieve the password length from the command line arguments if "--length" is provided, else set it to 8

.github/workflows/hackathon.yml

@@ -2,7 +2,6 @@ name: Hackathon
 
 on:
   workflow_dispatch:
-    branches: [hackathon]
     inputs:
       agents:
         description: "Agents to run (comma-separated)"
@@ -92,8 +91,6 @@ jobs:
         uses: actions/checkout@v3
         with:
           fetch-depth: 0
-          ref: ${{ github.event.pull_request.head.ref }}
-          repository: ${{ github.event.pull_request.head.repo.full_name }}
           submodules: true
 
       - name: Set up Python ${{ env.min-python-version }}
@@ -133,4 +130,4 @@ jobs:
           WEAVIATE_URL: ${{ secrets.WEAVIATE_URL }}
           GOOGLE_API_KEY: ${{ secrets.GOOGLE_API_KEY }}
           GOOGLE_CUSTOM_SEARCH_ENGINE_ID: ${{ secrets.GOOGLE_CUSTOM_SEARCH_ENGINE_ID }}
-          AGENT_NAME: ${{ matrix.agent-name }}
+          AGENT_NAME: ${{ matrix.agent-name }}