Update downstream-end-to-end-tests.yml

Author: t3chguy

.github/workflows/downstream-end-to-end-tests.yml

@@ -27,6 +27,7 @@ jobs:
             issues: read
             pull-requests: read
         with:
+            matrix-js-sdk-sha: ${{ github.sha }}
             react-sdk-repository: matrix-org/matrix-react-sdk
             # We only want to run the playwright tests on merge queue to prevent regressions
             # from creeping in. They take a long time to run and consume multiple concurrent runners.