chore: update sidecar package to v0.5.6

Author: github-actions[bot]

predicate_authority_sidecar/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "predicate-authority-sidecar"
-version = "0.5.5"
+version = "0.5.6"
 description = "Predicate Authority Sidecar binary installer (downloads on install)"
 readme = "README.md"
 requires-python = ">=3.11"