76254 update all packages (cla: yes, team, waiting for tree to go green)

76260 Remove mocks from visual_studio_test (cla: yes, team, tool)

76264 MockProcessManager -> FakeProcessManager in os_test (cla: yes, team, tool, waiting for tree to go green)

76266 Swap Mocks to Fakes in build_fuchsia_test (cla: yes, team, tool, waiting for tree to go green)

76274 Swap Mocks to Fakes in config_test and other tests (cla: yes, team, tool, waiting for tree to go green)

76275 Remove one TODO (a: accessibility, cla: yes, framework, team, waiting for tree to go green)

76276 Adopt FakeProcess, remove MockProcess (cla: yes, team, tool, waiting for tree to go green)