fix(deps): update dependency unleashclient to v6

Signed-off-by: red-hat-konflux <126015336+red-hat-konflux[bot]@users.noreply.github.com>

Author: red-hat-konflux[bot]

pyproject.toml

@@ -62,7 +62,7 @@ dependencies = [
     "tabulate>=0.8.6,<0.9.0",
     "terrascript==0.9.0",
     "toml>=0.10.0,<0.11.0",
-    "UnleashClient~=5.11",
+    "UnleashClient~=6.6",
     "urllib3~=2.2",
     "websocket-client<0.55.0,>=0.35",
     "yamllint==1.34.0",