[b/313430972] fix --version flag

[vladislav-sidorovich]

unspecified - for local build
vX.Y.Z - for releases downloaded from github

Output after the fix:

./dwh-migration-tools/bin/dwh-migration-dumper --version

   ____                   _         ____ _                 _
  / ___| ___   ___   __ _| | ___   / ___| | ___  _   _  __| |
 | |  _ / _ \ / _ \ / _` | |/ _ \ | |   | |/ _ \| | | |/ _` |
 | |_| | (_) | (_) | (_| | |  __/ | |___| | (_) | |_| | (_| |
  \____|\___/ \___/ \__, |_|\___|  \____|_|\___/ \__,_|\__,_|
                    |___/

  ______        ___   _   ____
 |  _ \ \      / / | | | |  _ \ _   _ _ __ ___  _ __   ___ _ __
 | | | \ \ /\ / /| |_| | | | | | | | | '_ ` _ \| '_ \ / _ \ '__|
 | |_| |\ V  V / |  _  | | |_| | |_| | | | | | | |_) |  __/ |
 |____/  \_/\_/  |_| |_| |____/ \__,_|_| |_| |_| .__/ \___|_|
                                               |_|

App version: [unspecified], change: [44e336c]
Build date: 2025-09-24T18:51:35.841Z

unspecified : 44e336c

[github-actions]

Code Coverage Report

Overall Project	61.62% -0.05%	🍏
Files changed	0%	❌

File	Coverage
DefaultArguments.java	36.91% -5.68%	❌