test(version): allow version to be 'UNRELEASED' or SemVer

During test build: 'UNRELEASED'
During release build: e.g. '1.0.0'

tests/commands/test_version.py

@@ -1,3 +1,4 @@
+import re
 import sys
 import unittest
 from contextlib import contextmanager
@@ -22,7 +23,7 @@ class VersionCommandTest(unittest.TestCase):
     def test_output(self):
         with captured_output() as stdout:
             version_command("version")
-        self.assertEqual("GitOps CLI version UNRELEASED\n", stdout.getvalue())
+        assert re.match(r"^GitOps CLI version (?:\d+\.\d+\.\d+|UNRELEASED)\n$", stdout.getvalue())
 
     def test_wrong_command_arg(self):
         with pytest.raises(AssertionError):