Fix: Remove local version identifier for PyPI compatibility

- Changed version from 0.23.1+varming.1 to 0.23.1
- PyPI rejects uploads with local version identifiers (the +varming.1 part)
- Clean version 0.23.1 is semantically correct (patch of upstream 0.23.0 with database fix)
- No conflicts since we use different package name (graphiti-core-varming vs graphiti-core)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

pyproject.toml

@@ -1,7 +1,7 @@
 [project]
 name = "graphiti-core-varming"
 description = "A temporal graph building library (Varming fork with database parameter fix)"
-version = "0.23.1+varming.1"
+version = "0.23.1"
 authors = [
     { name = "Paul Paliychuk", email = "paul@getzep.com" },
     { name = "Preston Rasmussen", email = "preston@getzep.com" },