adds constraints.txt file

Author: chalmerlowe

packages/bigquery-magics/testing/constraints-3.8.txt

@@ -0,0 +1,17 @@
+# This constraints file is used to check that lower bounds
+# are correct in setup.py
+# List *all* library dependencies and extras in this file.
+# Pin the version to the lower bound.
+#
+# e.g., if setup.py has "foo >= 1.14.0, < 2.0.0dev",
+# Then this file should have foo==1.14.0
+db-dtypes==0.3.0
+google-cloud-bigquery==3.13.0
+google-cloud-bigquery-storage==2.6.0
+ipywidgets==7.7.1
+ipython==7.23.1
+ipykernel==5.5.6
+pandas==1.2.0
+pyarrow==3.0.0
+pydata-google-auth==1.5.0
+tqdm==4.7.4