add race testing

Author: FGasper

.github/workflows/all.yml

@@ -40,6 +40,6 @@ jobs:
         run: go build main/migration_verifier.go
 
       - name: Test
-        run: go test -v ./...
+        run: go test -v ./... -race
         env:
           MONGODB_DISTRO: ${{matrix.os.mongodb_distro}}