CI: Fix an exclude in the test matrix.

Author: WarrenWeckesser

.github/workflows/tests.yml

@@ -23,7 +23,7 @@ jobs:
           - python-version: '3.7'
             numpy-version: '2.0.2'
           - python-version: '3.7'
-            numpy-version: '2.1.0'
+            numpy-version: '2.1.2'
           - python-version: '3.8'
             numpy-version: '1.25.2'
           - python-version: '3.8'