message: Switch UHDM submodule to back point to upstream repo
diff: url = https://github.com/google/flatbuffers.git
  [submodule "third_party/UHDM"]
  path = third_party/UHDM
  - url = https://github.com/hs-apotell/UHDM.git
  - branch = gha-ci
  + url = https://github.com/alainmarcel/UHDM.git
  [submodule "third_party/googletest"]
  path = third_party/googletest
  url = https://github.com/google/googletest.git
  