Update testing requirements and bump answer

Author: cphyc

labellines/baseline/test_xylogspace.png

@@ -32,7 +32,7 @@ include_package_data = True
 
 [options.extras_require]
 test =
-    matplotlib==3.6.2
-    pytest~=7.2
+    matplotlib==3.7.1
+    pytest==7.3.1
     pytest-cov==4.0.0
     pytest-mpl==0.16.1