build: run nightly build only for linux-nvme

The workflow depends on special runners which are only available
for the linux-nvme project.

Signed-off-by: Daniel Wagner <wagi@kernel.org>

Author: igaw

.github/workflows/run-nightly-tests.yml

@@ -9,6 +9,7 @@ on:
 jobs:
   nightly-tests:
     runs-on: nvme-nvm
+    if: github.repository == 'linux-nvme/nvme-cli'
     container:
       image: ghcr.io/linux-nvme/debian.python:latest
       #Expose all devices to the container through the `privileged` flag.