deps: bump dvc-data to >= 1.2.0

This brings https://github.com/iterative/dvc-data/pull/373 , which improves UI for `checkout` by not visually hanging during `diff` stage inside.

pyproject.toml

@@ -34,7 +34,7 @@ dependencies = [
     "configobj>=5.0.6",
     "distro>=1.3",
     "dpath<3,>=2.1.0",
-    "dvc-data>=1.1.0,<1.2.0",
+    "dvc-data>=1.2.0,<1.3.0",
     "dvc-http>=2.29.0",
     "dvc-render>=0.3.1,<1",
     "dvc-studio-client>=0.9.2,<1",