ci: test latest two go versions

Author: JohannesKaufmann

.github/workflows/go.yml

@@ -40,7 +40,7 @@ jobs:
   test_versions:
     strategy:
       matrix:
-        go: ['1.23', '1.24']
+        go: ['1.24', '1.25']
         os: [ubuntu-latest, macos-latest, windows-latest]
     name: Go ${{ matrix.go }} on ${{ matrix.os }}