.github/workflows/ci.yml: crank GOMAXPROCS for integration tests

See if they can run faster.

Signed-off-by: Mateusz Gozdek <mgozdek@microsoft.com>

Author: invidian

.github/workflows/ci.yml

@@ -252,6 +252,7 @@ jobs:
           if [ -n "${TEST_SKIP}" ]; then
             skip="-skip=${TEST_SKIP}"
           fi
+          export GOMAXPROCS=8
           go test -timeout=59m -v -json ${run} ${skip} ./test | go run ./cmd/test2json2gha --slow 120s --logdir /tmp/testlogs
         env:
           TEST_SUITE: ${{ matrix.suite }}