swift

a1da21ff - [cherry-pick][ci] limit parallel link jobs in buildbot_linux_base to 4 (#88888) (#91235)

[cherry-pick][ci] limit parallel link jobs in buildbot_linux_base to 4 (#88888) (#91235) Cherry picking #88888 as we bring up more platforms for 6.4.x - **Explanation**: Cherry picking #88888 as we bring up more platforms for 6.4.x to prevent OOM issues when building new platforms - **Scope**: Simply changes the linux build preset with a cmake flag - **Issues**: NA - **Original PRs**: #88888 - **Risk**: Very low. - **Testing**: We run this on main in our CI builds and works fine