Add gotestfmt to nightly unit testing

.github/workflows/schedules.yaml

@@ -45,6 +45,11 @@ jobs:
         uses: actions/setup-go@v3
         with:
           go-version: ${{ matrix.go }}
+      - name: Set up gotestfmt
+        uses: gotesttools/gotestfmt-action@v2
+        with:
+          # Optional: pass GITHUB_TOKEN to avoid rate limiting.
+          token: ${{ secrets.GITHUB_TOKEN }}
       - uses: actions/cache@v3
         with:
           path: |