Move to dependabot (#547)

* Move from CompatHelper to dependabot to handle Julia updates
* Add Changelog entry.æ
* Keep Compat for a while to compare how both work.

Author: kellertuer

.github/dependabot.yml

@@ -1,7 +1,23 @@
 # https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+# For the Julia part inspired by
+# * https://github.com/JuliaDiff/DifferentiationInterface.jl/pull/924
+# * https://github.com/NumericalEarth/Breeze.jl/blob/f066f4dbca086c622be30c9276dae6e79d8e6c0a/.github/dependabot.yml
 version: 2
+enable-beta-ecosystems: true # for now necessary to use the Julia ecosystem
 updates:
   - package-ecosystem: "github-actions"
     directory: "/" # Location of package manifests
     schedule:
       interval: "weekly"
+  - package-ecosystem: "julia"
+    directories: # Location of Julia projects
+      - "/"
+      - "/docs"
+      - "/tutorials"
+    schedule:
+      interval: "daily"
+    groups:
+      # Group all Julia package updates into a single PR:
+      all-julia-packages:
+        patterns:
+          - "*"

Changelog.md

@@ -19,6 +19,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 * Removed `atol` from `DebugFeasibility` and instead use the one newly added `atol` from the `ConstrainedManifoldObjective`.
+* Move from CompatHelper to dependabot to keep track of dependency updates in Julia packages.
 
 ## [0.5.28] November 17, 2025