ci: move ui reports to the root to simplify artifacts browsing

I wanted to use a symlink but that does not seem to work on GitLab https://gitlab.com/gitlab-org/gitlab-runner/issues/4241.

ci/posttest.yml

@@ -30,8 +30,9 @@ core unix ui changes:
   script:
     - cd tests/ui_tests
     - pipenv run python reporting/report_master_diff.py
+    - mv reporting/reports/master_diff/ ../..
   artifacts:
     name: core-unix-ui-changes
     paths:
-    - tests/ui_tests/reporting/reports/master_diff
+    - master_diff
     expire_in: 1 week

ci/prepare_ui_artifacts.py

@@ -13,9 +13,9 @@ def _hash_files(path):
     return hasher.digest().hex()
 
 
-root = Path().cwd() / "../tests/ui_tests"
-screens = root / "screens"
-fixtures = root / "fixtures.json"
+root = Path(__file__).parent / ".."
+screens = root / "tests/ui_tests/screens"
+fixtures = root / "tests/ui_tests/fixtures.json"
 
 hashes = json.loads(fixtures.read_text())
 
@@ -24,4 +24,4 @@ for test_case in hashes.keys():
     expected_hash = hashes[test_case]
     actual_hash = _hash_files(recorded_dir)
     assert expected_hash == actual_hash
-    shutil.make_archive("ui_test_records/" + actual_hash, "zip", recorded_dir)
+    shutil.make_archive(root / "ci/ui_test_records" / actual_hash, "zip", recorded_dir)

ci/test.yml

@@ -19,13 +19,14 @@ core device ui test:
   script:
     - cd core
     - pipenv run make test_emu_ui
-    - cd ../ci
-    - pipenv run python prepare_ui_artifacts.py
+    - cd ..
+    - mv tests/ui_tests/reporting/reports/test/ test_ui_report
+    - pipenv run python ci/prepare_ui_artifacts.py
   artifacts:
     name: core-device-ui-test
     paths:
       - ci/ui_test_records/
-      - tests/ui_tests/reporting/reports/test/
+      - test_ui_report
       - tests/ui_tests/screens/
       - tests/junit.xml
       - tests/trezor.log