moving transformers to example dependency

Author: edyoshikun

pyproject.toml

@@ -27,9 +27,7 @@ dependencies = [
     "matplotlib>=3.9.0",
     "numpy",
     "xarray",
-    "pytorch-metric-learning>2.0.0",
-    "transformers>=4.51.3",
-]
+    "pytorch-metric-learning>2.0.0"]
 dynamic = ["version"]
 
 [project.optional-dependencies]
@@ -44,7 +42,7 @@ metrics = [
     "phate",
     "mahotas",
 ]
-examples = ["napari", "jupyter", "jupytext"]
+examples = ["napari", "jupyter", "jupytext", "transformers>=4.51.3"]
 visual = [
     "ipykernel",
     "graphviz",