Update project_dependencies.py

[omamkaz]

Fixed when I get no markers key in the version_value variable.

Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.12.5/x64/bin/flet", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/opt/hostedtoolcache/Python/3.12.5/x64/lib/python3.12/site-packages/flet/cli.py", line 12, in main
    flet_cli.cli.main()
  File "/opt/hostedtoolcache/Python/3.12.5/x64/lib/python3.12/site-packages/flet_cli/cli.py", line 89, in main
    args.handler(args)
  File "/opt/hostedtoolcache/Python/3.12.5/x64/lib/python3.12/site-packages/flet_cli/commands/build.py", line 557, in handle
    self.package_python_app()
  File "/opt/hostedtoolcache/Python/3.12.5/x64/lib/python3.12/site-packages/flet_cli/commands/build.py", line 1303, in package_python_app
    toml_dependencies = get_poetry_dependencies(
                        ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.12.5/x64/lib/python3.12/site-packages/flet_cli/utils/project_dependencies.py", line 41, in get_poetry_dependencies
    format_dependency_version(dependency, version)
  File "/opt/hostedtoolcache/Python/3.12.5/x64/lib/python3.12/site-packages/flet_cli/utils/project_dependencies.py", line 21, in format_dependency_version
    if version_value["markers"]:
       ~~~~~~~~~~~~~^^^^^^^^^^^
KeyError: 'markers'

Description

Test Code

# Test code for the review of this PR

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist

• I signed the CLA.
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• New and existing tests pass locally with my changes
• I have made corresponding changes to the documentation (if applicable)

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Additional details

Summary by Sourcery

Bug Fixes:

• Fix a KeyError in format_dependency_version by using get() to safely access the 'markers' key.

[CLAassistant]

All committers have signed the CLA.

[omamkaz]

• Fixed flet_cli/utils/project_dependencies.py