Merge branch 'gh-actions-bionic' of https://github.com/mrc0mmand/util-linux

* 'gh-actions-bionic' of https://github.com/mrc0mmand/util-linux:
  ci: run the build test for each pull request
  ci: build both w/ and w/o sanitizers on GH Actions
  ci: code cleanup
  ci: deal with uninstrumented binaries using instrumented libs
  text-utils: correctly detect ASan under clang
  ci: use the correct compiler version
  ci: 'downgrade' Ubuntu version to Bionic