Pin numpy to version 1 to fix pandas

For pandas versions before 2.2, pin numpy to version 1 [1]. This commit
should fix CI for Python 3.9.

[1] pandas-dev/pandas#55519

Author: huddlej

pyproject.toml

@@ -21,6 +21,7 @@ classifiers = [
 dependencies = [
     "jellyfish >=0.8.2, ==0.*",
     "opencv-python >=4.5, ==4.*",
+    "numpy >=1.17.0, ==1.*",
     "pandas >=1.2.0, ==1.*",
     "scipy >=1.5.4, ==1.*",
 ]