Update dependabot.yml to add Julia ecosystem support

Author: ChrisRackauckas-Claude

.github/dependabot.yml

@@ -1,5 +1,6 @@
 # https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
 version: 2
+enable-beta-ecosystems: true # Julia ecosystem
 updates:
   - package-ecosystem: "github-actions"
     directory: "/" # Location of package manifests
@@ -8,3 +9,13 @@ updates:
     ignore:
       - dependency-name: "crate-ci/typos"
         update-types: ["version-update:semver-patch", "version-update:semver-minor"]
+  - package-ecosystem: "julia"
+    directories:
+      - "/"
+      - "/test"
+    schedule:
+      interval: "daily"
+    groups:
+      all-julia-packages:
+        patterns:
+          - "*"