chore(ci): run interop-tests on github workers

Pull-Request: #6549.

Author: jxs

.github/workflows/interop-test.yml

@@ -45,7 +45,7 @@ jobs:
   run-holepunching-interop:
     name: Run hole-punch interoperability tests
     if: github.event_name == 'push' || github.event.pull_request.head.repo.full_name == github.repository
-    runs-on: ${{ fromJSON(github.repository == 'libp2p/rust-libp2p' && '["self-hosted", "linux", "x64", "4xlarge"]' || '"ubuntu-latest"') }}
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v7
       - uses: docker/setup-buildx-action@v4