workflows/release-tasks: Always run apt-get update before installing deps

There is a bug in the package tree of on the default images that
causes some dependencies not to be found.  Running apt-get gets us
the latest package lists rather than relying on the default lists
in the GitHub Runner imgae, which can be up to a week old.

Running apt-get update before intstalling packages is also recommended in
the official github documentation:

https://docs.github.com/en/actions/using-github-hosted-runners/customizing-github-hosted-runners#installing-software-on-ubuntu-runners

Reviewed By: thieta

Differential Revision: https://reviews.llvm.org/D148741