👷Explicitly run the effection linked tests against v2

The process infrastructure was moved out of effection core in v3, but
this resulted in the build getting broken when the default branch
switch from v2-v3.

This explicitly uses v2 when checking against  a linked effection.

We may not need to do this at all now that v2 is not longer maintained.

.github/workflows/test.yml

@@ -60,10 +60,11 @@ jobs:
           node-version: ${{ matrix.node-version }}
           yarn-version: 1.22.19
       # checkout and setup effection then run tests
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           path: effection
           repository: thefrontside/effection
+          ref: v2
       - run: yarn install
         working-directory: effection
       - run: yarn link ctrlc-windows