Improve Bash Deployment Scripts for Robust Error Handling

[tjementum]

Summary & Motivation

Address error handling in infrastructure Bash deployment scripts to correct the issue where the output of Bicep commands piped to tee /dev/tty fails in non-interactive environments. Modify the piping to 2>&1 to capture both stdout and stderr reliably across different contexts.

Introduce #!/bin/bash shebang to all infrastructure scripts to standardize execution behavior and formatting, aligning the local terminal experience with that of GitHub Actions.

Checklist

• I have added a Label to the pull-request
• I have added tests, and done manual regression tests
• I have updated the documentation, if necessary