Dependabot: don't update timm (#2257)

.github/dependabot.yml

@@ -19,11 +19,6 @@ updates:
         patterns:
           - "torch"
           - "torchvision"
-      # segmentation-models-pytorch pins timm, must update in unison
-      timm:
-        patterns:
-          - "segmentation-models-pytorch"
-          - "timm"
     ignore:
       # setuptools releases new versions almost daily
       - dependency-name: "setuptools"
@@ -32,6 +27,8 @@ updates:
       # https://github.com/pytorch/pytorch_sphinx_theme/issues/175
       - dependency-name: "sphinx"
         versions: ">=6"
+      # segmentation-models-pytorch pins timm, must update in unison
+      - dependency-name: "timm"
   - package-ecosystem: "npm"
     directory: "/requirements"
     schedule: