Add CIMON_URL environment variable to workflow

Author: omerr-cycode

.github/workflows/c-cpp.yml

@@ -7,6 +7,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: cycodelabs/cimon-action@v1
+        env:
+          CIMON_URL: https://api.eu.cycode.xyz/
         with:
           client-id: ${{ secrets.CIMON_CLIENT_ID }}
           secret: ${{ secrets.CIMON_SECRET }}