UnboundLocalError when parsing invalid YAML file

[Timorleiderman]

Describe the bug When pybump attempts to parse an invalid YAML file, it crashes with an UnboundLocalError instead of providing a clear error message and graceful exit. The YAMLError exception is caught and printed in src/pybump.py:127-128, but execution continues without exiting, leaving file_content undefined.

To Reproduce echo "version: 1.0.0 name: invalid bad-indent: oops" > test_invalid.yaml

pybump get --file test_invalid.yaml

Expected behavior A clear and concise description of what you expected to happen.

System information:

• OS version: Darwin 24.5.0
• Python version: Python 3.13.x