ci: run six-peer regression on ubuntu runners

Author: sanity

.github/workflows/six-peer-regression.yml

@@ -12,16 +12,13 @@ on:
 
 jobs:
   river-six-peer:
-    runs-on:
-      - self-hosted
-      - freenet-128gb
+    runs-on: ubuntu-latest
     timeout-minutes: 120
     steps:
       - name: Checkout freenet-core
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
-          path: freenet-core
 
       - name: Checkout river
         uses: actions/checkout@v4
@@ -40,7 +37,7 @@ jobs:
       - name: Run six-peer regression
         working-directory: river/main
         env:
-          FREENET_CORE_PATH: ${{ github.workspace }}/freenet-core
+          FREENET_CORE_PATH: ${{ github.workspace }}
           RUST_LOG: info
         run: |
           cargo test --test message_flow river_message_flow_over_freenet_six_peers_five_rounds -- --ignored --exact