update syntax check to shared action

[Klintrup]

This pull request includes a change to the workflow file .github/workflows/lint-shell.yml to improve the naming and execution of a job. The sh-noexec-verify job was renamed to simple-shell-syntax-check and the run command was replaced with the uses command to run the Klintrup/simple-shell-syntax-check@v1 action.

Main workflow change:

• .github/workflows/lint-shell.yml: Renamed the sh-noexec-verify job to simple-shell-syntax-check and replaced the run command with the uses command to run the Klintrup/simple-shell-syntax-check@v1 action.