Run CI tests on 386 too cc #516 (#518)

Author: fenollp

.github/workflows/go.yml

@@ -61,6 +61,10 @@ jobs:
     - run: go fmt ./...
     - run: git --no-pager diff --exit-code
 
+    - if: runner.os == 'Linux'
+      run: go test ./...
+      env:
+        GOARCH: '386'
     - run: go test ./...
     - run: go test -v -run TestRaceyPatternSchema -race ./...
       env: