Change version in pyproject

Author: AlexeyKozhevin

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "batchflow"
-version = "0.8.11"
+version = "0.8.12"
 description = "ML pipelines, model configuration and batch management"
 authors = [{ name = "Roman Kh", email = "[email protected]" }]
 license = {text = "Apache License 2.0"}