Update script to use bash instead of sh

Replaced 'sh' with 'bash' for script execution.

Author: twsl

project/scripts/llm.sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 
-curl -fsSL https://gh.io/copilot-install | sh
-curl -fsSL https://claude.ai/install.sh | sh
-curl -fsSL https://chatgpt.com/codex/install.sh | CODEX_NON_INTERACTIVE=1 sh
+curl -fsSL https://gh.io/copilot-install | bash
+curl -fsSL https://claude.ai/install.sh | bash
+curl -fsSL https://chatgpt.com/codex/install.sh | CODEX_NON_INTERACTIVE=1 bash
 
-curl -fsSL https://raw.githubusercontent.com/rtk-ai/rtk/refs/heads/master/install.sh | sh
+curl -fsSL https://raw.githubusercontent.com/rtk-ai/rtk/refs/heads/master/install.sh | bash