[chore] Fix "Device or resource busy" error when running tests on Win…

…dows

.github/workflows/build-and-test-windows.yml

@@ -72,6 +72,11 @@ jobs:
       - name: Ensure required ports in the dynamic range are available
         run: |
           & ${{ github.workspace }}\.github\workflows\scripts\win-required-ports.ps1
+      - name: Build shared test tools
+        # If component tests share Makefile targets they need to be added here to avoid
+        # concurrent component tests clashing when building such targets. This applies
+        # specifically to Windows, see https://github.com/open-telemetry/opentelemetry-collector-contrib/issues/34691
+        run: make "$(${PWD} -replace '\\', '/')/.tools/gotestsum"
       - name: Run Unit tests
         run: make -j2 gotest GROUP=${{ matrix.group }}
   windows-unittest: