ci: enhance dependabot config to track pip and cargo packages (#658)

* ci: enhance dependabot config to track pip and cargo packages

* chore: change package-ecosystem from 'pip' to 'uv'

* ci: remove Cargo dependencies from dependabot config

Removed Cargo package ecosystems for pyo3-object_store and pyo3-bytes.

* remove uv and pip

---------

Co-authored-by: Kyle Barron <kyle@developmentseed.org>

Author: lhoupert

.github/dependabot.yml

@@ -13,3 +13,17 @@ updates:
         update-types:
           - "minor"
           - "patch"
+
+  - package-ecosystem: "cargo"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+    groups:
+      minor-and-patch:
+        applies-to: version-updates
+        patterns:
+          - "*"
+        update-types:
+          - "minor"
+          - "patch"