Add {package} to before-build

Author: lysnikolaou

pyproject.toml

@@ -154,7 +154,7 @@ test-command = """
   pd.test(extra_args=["-m not clipboard and not single_cpu and not slow and not network and not db", "-n 2", "--no-strict-data-files"]); \
   pd.test(extra_args=["-m not clipboard and single_cpu and not slow and not network and not db", "--no-strict-data-files"]);' \
   """
-before-build = "bash scripts/cibw_before_build.sh"
+before-build = "bash {package}/scripts/cibw_before_build.sh"
 
 [tool.cibuildwheel.windows]
 before-build = "pip install delvewheel"