Empty requirements.txt file passed as `--dependencies` flag for python function results in invalid json format

[kwiatekus]

Description

When I try to create python function with empty requirements.txt file, the resulting spec.source.inline.dependencies has invalid json format

kyma function create tst --dependencies requirements.txt --source handler.py --runtime python312 --dry-run -oyaml

spec:
    source:
        inline:
            dependencies: |
                {
                  "dependencies": {}
                }

When the file is nonempty, the generated function manifest is ok:

    source:
        inline:
            dependencies: |
                camel-case=1.0.1