Fix ref

Author: Ifropc

.github/workflows/e2e.yml

@@ -25,7 +25,7 @@ jobs:
           - os: macos-latest
             # Not supported yet
           # - os: windows-latest-8-cores
-    uses: stellar/system-test/.github/workflows/test.yml@c895dc10c4f8b1d27d0c760531f2ab2e76b44236
+    uses: stellar/system-test/.github/workflows/test.yml@52d785080adf55d947bd5a3fd4e2fff0d239e086
     with:
       stellar-cli-ref: ${{ github.ref }}
       test-filter: "^TestDappDevelop$/^.*$"