Python: Shorten tree-sitter-python directory name

The current name results in a path that is more than 260 characters long,
and this causes issues for the build on Windows.

python/extractor/tsg-python/Cargo.toml

@@ -17,7 +17,7 @@ smallvec = { version="1.6", features=["union"] }
 thiserror = "1.0"
 tree-sitter = "0.20.4"
 tree-sitter-graph = "0.7.0"
-tree-sitter-python = {path = "tree-sitter-python"}
+tree-sitter-python = {path = "tsp"}
 clap = "2.32"
 
 [dependencies.string-interner]