update tests.yml (#601)

Author: bmoffatt

.github/workflows/tests.yml

@@ -11,6 +11,7 @@ jobs:
       fail-fast: false
       matrix:
         go:
+          - "1.25"
           - "1.24"
           - "1.23"
           - "1.22"
@@ -56,7 +57,7 @@ jobs:
     strategy:
       matrix:
         go:
-          - "1.21"
+          - "1.25"
     steps:
       - name: Set up Go ${{ matrix.go }}
         uses: actions/setup-go@v3