Bump pyproject.toml to 0.5.11 (browser-use#2629)

Bump `pyproject.toml` version to 0.5.11.

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## Summary by cubic
Updated the project version in pyproject.toml from 0.5.10 to 0.5.11.

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Author: mertunsall

pyproject.toml

@@ -2,7 +2,7 @@
 name = "browser-use"
 description = "Make websites accessible for AI agents"
 authors = [{ name = "Gregor Zunic" }]
-version = "0.5.10"
+version = "0.5.11"
 readme = "README.md"
 requires-python = ">=3.11,<4.0"
 classifiers = [