Increase test timeout to allow slow VMs to finish

Author: daztucker

.github/workflows/selfhosted.yml

@@ -92,7 +92,7 @@ jobs:
       run: vmrun make
     - name: make tests
       run: vmrun ./.github/run_test.sh ${{ matrix.configs }}
-      timeout-minutes: 300
+      timeout-minutes: 600
     - name: save logs
       if: failure()
       uses: actions/upload-artifact@v2