Clarify action name.

.github/workflows/pythonpackage.yml → .github/workflows/pythontest.yml

@@ -1,4 +1,4 @@
-name: Python package
+name: Python tests
 
 on:
   push:
@@ -7,7 +7,7 @@ on:
     - cron: "0 6 * * *" # Daily 6AM UTC build
 
 jobs:
-  build:
+  test:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix: