feat: use self hosted runner

[imotai]

PR-Codex overview

This PR focuses on improving the Octopus agent by making various updates and fixes.

Detailed summary:

• Removed ExecuteShellCodeTool and ExecuteTypescriptCodeTool from langchain_agent_builder.py
• Updated start_local.sh script to use ps -ef instead of ps -eu for killing Python processes
• Updated CI workflow to run on a self-hosted runner instead of ubuntu-latest
• Updated ci.yaml to use actions/checkout@v3 instead of actions/checkout@v2
• Updated ci.yaml to use pip install -r requirements.txt instead of pip install .
• Updated prompt.py to remove mention of executing TypeScript and shell scripts in the programming environment capabilities
• Updated kernel_client_tests.py to remove test case related to executing TypeScript code
• Updated agent_tool_tests.py to remove kernel_sdk fixture as an async function
• Updated agent_setup.py to improve code formatting and remove unused imports

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