Bump go version in tests

Signed-off-by: Jo Vandeginste <Jo.Vandeginste@kuleuven.be>

Author: jovandeginste

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version: "1.21"
+          go-version: "1.25"
 
       - name: Run Go tests
         run: go test -v ./...