CI: Update latest numpy in test matrix to 2.1.3.

Author: WarrenWeckesser

.github/workflows/tests.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       matrix:
         python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
-        numpy-version: ['1.20.3', '1.21.6', '1.22.4', '1.23.5', '1.24.4', '1.25.2', '1.26.4', '2.0.2', '2.1.2']
+        numpy-version: ['1.20.3', '1.21.6', '1.22.4', '1.23.5', '1.24.4', '1.25.2', '1.26.4', '2.0.2', '2.1.3']
         exclude:
           - python-version: '3.7'
             numpy-version: '1.22.4'
@@ -23,17 +23,17 @@ jobs:
           - python-version: '3.7'
             numpy-version: '2.0.2'
           - python-version: '3.7'
-            numpy-version: '2.1.2'
+            numpy-version: '2.1.3'
           - python-version: '3.8'
             numpy-version: '1.25.2'
           - python-version: '3.8'
             numpy-version: '1.26.4'
           - python-version: '3.8'
             numpy-version: '2.0.2'
           - python-version: '3.8'
-            numpy-version: '2.1.2'
+            numpy-version: '2.1.3'
           - python-version: '3.9'
-            numpy-version: '2.1.2'
+            numpy-version: '2.1.3'
           - python-version: '3.10'
             numpy-version: '1.20.3'
           - python-version: '3.11'