gha: prevent from running large tests on forks

Signed-off-by: Alessandro Comodi <[email protected]>

Author: acomodi

.github/workflows/large-tests.yml

@@ -9,6 +9,9 @@ on:
 jobs:
 
   Run-tests:
+    # Prevents from running on forks where no custom runners are available
+    if: ${{ github.repository_owner == 'verilog-to-routing' }}
+
     container: ubuntu:bionic
 
     runs-on: [self-hosted, Linux, X64]