Merge pull request ethereum#13806 from ethereum/fix-pooltogether-fail…

…ing-test

Pin v4-core dependecy to fix failing exteral pooltogether test

test/externalTests/pool-together.sh

@@ -69,6 +69,9 @@ function pool_together_test
     force_hardhat_compiler_settings "$config_file" "$(first_word "$SELECTED_PRESETS")" "$config_var"
     yarn install
 
+    # TODO: Remove this when https://github.com/pooltogether/v4-core/issues/287 gets fixed.
+    npm install @pooltogether/[email protected]
+
     # These come with already compiled artifacts. We want them recompiled with latest compiler.
     rm -r node_modules/@pooltogether/yield-source-interface/artifacts/
     rm -r node_modules/@pooltogether/uniform-random-number/artifacts/