Typed signatures for event handlers.

Signed-off-by: Pavel Patrin <ppatrin@nvidia.com>

.github/workflows/go.yml

@@ -10,7 +10,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v4
         with:
-          go-version: '1.20'
+          go-version: '1.21'
       - name: Build
         run: go build -v ./...
       - name: Test