fix(build): correct git diff pathspec in trampoline scripts for CI presubmit checks

[sakthivelmanii]

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Fixes #<issue_number_goes_here> 🦕

[gemini-code-assist]

Code Review

This pull request adds a trailing newline to the trampoline script. Feedback indicates that while the PR title suggests a fix for a git diff pathspec, the actual logic changes are missing from the commit.